Thought everything was going good

So I haven't been on here for a while and everything has been going good. My man went and got help he's been clean we're going on 6 months. Well about 2 weeks ago one of my friends was getting evicted. She needed a place to stay and I said she could stay here. Well he doesn't really like this friend. And me and him were talking about it. I told him we three need to sit down as adults and talk about it and make rules. The reason he doesn't like this friend is because he thinks me and her were lovers. And if anybody knows on here I am bisexual. But that doesn't mean I want to sleep with every girl I meet or we become friends. Well she is my friend and we have never seen each other like that. So we have been fighting or not really fighting just little Vickers here and there and someone once told me you don't bring another female into your house. So this is like a really hard decision for me and she has been a long time friend and I've only been with him for 2 years. So for two weeks our relationship hasn't been that good and he started drinking more. But she found somewhere else to stay. But before he found out about her finding somewhere else to stay I noticed he started messaging other girls on messenger. And I would wake up in the middle of the night because out here his phone go off so I would check it and some girls would reply but the messages that he sent were removed. Well anyways I was sort of done with it cuz I'm sort of getting tired of this you guys all know we're 10 years apart and I'm just tired of fighting all the time tired of worrying if he's cheating I have my life to live. So I told him next Friday he needs to give me $300 or he needs to find somewhere else to live so am I taking it too far or do you guys think I should try to talk to him and really find out if he's cheating. He says he's not with anybody else just with me and that he loves me and that he wasn't messaging anybody I wish I could post screenshots of his messages but I didn't take them so just let me know what you guys think thanks.