Sleepy around Fiance?

I Am 25 weeks pregnant & its so weird because sometimes almost every time I get around him I get super tired , I wouldn't get that tired until he comes around. Like we can be laying down watching TV & I'll fall asleep or get tired, When I'm else where laying down or even sitting or something I do not be overly tired lol. He also gets symptoms but is this weird ? Do any of you get this ?