Would u think this is weird?

Ok so I'm on semi with my dad for a week while he helps his lil brother out driving, my bf is home, last night he goes to his sister's and starts drinking and stays night there. He pretty much stated he only went bc I'm o. Semi with my dad and he was lonely. His family has had nothing to do with him until his brother passed away shortly ago. I'm almost 8 weeks pregnant with his kid, is it just me or is that kinda weird he goes to his sister's gets drunk and ends up staying night there all bc I'm not home, he didn't wanna stay home alone...ive been gone since Monday and I'll b back Sunday. He tried telling me Idk what it's Like being home alone, that I stay at my parents. It's been my daughter and I for 13 yrs, I stay at my house and she stays night at friends or families, I've been "home alone" b4 so Idk y he is trying put it off on me. Is it weird he did that or what?