Boyfriend and dreams ?

So my bf has a dream I slept with his dad and got pregnant then he texts me saying he’s sorry for the way he’s been (we’ve been going thru some things) but yesterday he was taking hours to reply to me after work n I found that kind of suspicious . He got off at 5 then at 6:30 said he was smoking w co workers then not even 10 minutes later he’s “on the train and it stinks” makes it seem like he’s trying too hard to let me know where he’s at idk how u can get to AND on a train that fast then he doesn’t reply for another hour.. then says he’s home

Sound weird to u guys? What r some questions I can ask him to try to catch him in a lie cuz this sounds fishy to me