Doubts and confusion lately

I feel sort of silly asking for help from people I don't even know, but I'm hoping I can get some answers. My boyfriend and I have been together 5 months. I feel like he's been acting really different lately. Used to we could see each other 4-6 days a week but lately, weve both been SUPER busy so some weeks we only get to see each other 2-3 at most. He has been stressed from work lately so maybe that is causing this. Then again, I overthink everything so maybe he hasn't been acting that differently. I overanalyze everything and I hate that about myself, but I'm starting to feel as if we are drifting apart. We still text and talk at all hours of the day, but just don't see each other as much as we'd like. This weekend we were supposed to take a trip for my birthday but don't know for sure yet because he may have a sports event (he is an assistant coach). He wont know if they will have the sports event until he knows how many kids will be able to actually attend (several events going on at the school that day). I just feel like he's not as excited as me to go. Used to he posted all kinds of sweet romantic things on my facebook and he hasn't done that in nearly a month. Am I looking to much into things? Im so confused because in the beginning I feel like he was REALLY interested in me, but I wasn't that interested. Now I feel like Ive warmed up to him a little, but the tables have turned. Am I looking too much into this? He is very open with me so I think he'd tell me if something was going on....I just don't know?

Also, he still tells me ho loves me all the time, so I feel silly to doubt his love. but since I feel theres been change in his behavior, I'm starting to doubt his love for me. I overanalyze everything though. I always have. A few weeks ago I was reading one of my old diaries from a previous bf and I had written that he'd called me on his lunch break but got off the phone two minutes early so I "just knew he was cheating".....I always jump to conclusions so I cant tell if its one of those cases or if there is actually a problem

I just keep adding to this post lol but I keep thinking of details Ive left out. He mostly has single friends (he doesn't have a whole lot of friends) but they are mostly single. There are two that had gfs. One broke up with him and the other is really having problems with his gf at the moment. My bf told me when he's with them, they bash women the whole time because they've been hurt so much. Maybe him acting differently could stem from them probably filling his head with negativities on women and how they do men wrong. Im afraid they will try to turn him on me because they'll put in his head I'll do him the way they've been treated OR they will be jealous because he actually has a good girl that wont screw him over and will in turn try to change his feelings for me..