kinda weird?

There's this guy who lives near my area he added me on Facebook&instagram like a long time ago. We never talked. Only have liked each others posts sometimes. Well he started dating a girl they just had a baby. Well while she was pregnant I remember she requested to follow me on Instagram i accepted it. Then just a bit ago I got a request from her again? I just find it weird because it's not like we like each other's post all the time. He's attractive, I think it's cute how good of a dad he is and that's it. I have a boyfriend myself. Again we've never tried talking to each other and I know for sure I'm not the only girl liking his post. And again it's not even all the time. So I find it weird out of all people she requests to follow me and such.