But between the times that my fiance has him from 9am-1230pm and 7pm-12am he like to randomly pee in the house! We will take him outside numerous times, stay with him out there for 20 min or more just letting him run around but as soon as we bring him in not 5 min later he pee's. He VERY RARELY potty's in the crate, there have only been a few accidents.
I'm guessing you must have gotten him pretty young since he's just now 8 weeks old and you're already so frustrated with him not being housebroken yet? I would never expect an 8 week old puppy to be fully housebroken, it's just not realistic.
A couple things I see that other people have already addressed - at his age he has very little bladder and bowel control. When he has to go, he has to go NOW! It's way too early to expect him to know far enough in advance that he needs to pee/poop so you can get him outside, and he's also not going to know how to alert you
to the fact that he needs to go, even if he did have that kind of advance warning.
Plus, it can take weeks or months of reinforcement for doing his business outside before that little lightbulb goes off in his head, the "aha!" moment where he realizes that this is what he's supposed to be doing, every time. You're probably having fewer poop accidents because puppies usually have to pee several times for each time they poop, so maybe 2 or 3 poops a day, but 5 or 6 or more pees. I found that my pups were having pee accidents long after we had the poop thing under control, and also that they seemed to figure out where they should
be going before they figured out the other part of the equation, where they should NOT.
The more opportunities you have for positive reinforcement for going outside (big party, lots of happy praise, yummy treat), and the fewer opportunities he has to make a mistake in the house, the faster he's going to learn, so it's up to you and your fiance to make that happen. Also - are you cleaning up his accidents with an enzyme cleaner to completely eliminate the odor? If not, he will be attracted back to those places he's already pee because they smell like the right place to go.
What I learned with my hubby, and this may also be true of your fiance - "watching" the puppy meant something entirely different to him than it did to me. For me, if I couldn't actually see the puppy, if I didn't have eyes on, if the puppy was just in the same room with me but my back was turned and my attention elsewhere, or worse, somewhere else in the house, that's not WATCHING
If I'm too busy (cooking dinner, cleaning house...) puppy goes in the crate. When puppy is out of the crate s/he's closed into a small space with me, and unless s/he's sleeping (in which case I may not be actually looking at the puppy the entire time, but I'm listening, and I'll turn my head and check on it every couple of minutes. If you need to move around the house, you can keep him close by tethering him to you with a leash. And take him out very often, every half hour to hour until he does his business, and then you'll know you have a little time to relax and take a breath.
He should need to go out after playing, eating, drinking, and napping, so if you take him out and nothing happens, bring him back inside and confine him in the crate for a short time and then try again. Over and over again, if necessary. Are you using words like "hurry up" or "go potty" to associate them with the act of going pee/poop outside? Having a dog that will pee or poop on cue is a great thing, so consider doing this if you're not already.
Have you figured out how you'd like him to let you know he needs to go out once he's capable of doing so? A lot of us use bells hung over the door (BTW - do you always take him outside through the same door?). At first I ring the bells as I'm opening the door, and I say "outside!", to associate the sound of the bells with the door opening and us going out. You can also teach him to target the bells by bumping them with his nose, but mine have always eventually figured out on their own to bump the bells so they make noise in order to alert me that they need to go out. But it can take awhile and lots of repetitions of "outside" and ringing the bells to create that association, and with a puppy that young who can't hold it very long you don't want to slow down the process of getting him outside, so I might not worry about trying to teach him to ring the bells himself for the time being. Now my dogs will run to the back door if I ask them "do you have to go outside?" because they know that that word means the door will open.
Good luck! Especially with your fiance. You may have some resistance to the idea of watching the puppy that closely, but try to explain to him that this will all be over sooner, that the accidents will slow down and stop sooner, if you're both on the same page and extremely diligent. My hubby was astounded when he realized I actually expected him to stare at the puppy the entire time, lol! Um, yeah - that's what watching means!!!