Is he on tinder?

Hi all, I’ve had a weird feeling that my boyfriend may be up to something but it may be me being paranoid after my sister got cheated on this weekend.

So, my best friend matched with my now boyfriend months before we even met and we joked about it. She and I are both now in relationships, however I texted her asking to see if she could see if he was active on his tinder. She checked her activity and he hasn’t been since we started dating. However, when she took a screenshot of his profile it said that he was “30 miles” away. Does that mean he has been active on tinder? I just don’t want to bring up anything because I don’t want him to think I don’t trust him or cause problems... Maybe I am just being a paranoid girl