<human>: Hi reddit!

I've been dating a woman for about six months. We've met online using a dating site and things have been going very well. We spend a lot of time together and take lots of weekend trips. We've met each others' family, etc., so it's pretty serious.

Recently, one of my friends [also 26M] mentioned that he saw my girlfriend on said online dating site and said that she's been active within the last week and apparently does log in at least weekly. He showed me using his profile and he's telling the truth.

It's kind of a touchy subject for me because I was cheated on in a really bad way in my past, which my GF is aware of, and it makes me uncomfortable. Do you think I'm reading too much into this, or is it something I should talk to her about?

What would reddit do?

Provide a brief overview of the text.
<bot>: I've been dating a woman for six months and things are going great, except that her online dating profile is active and she checks it weekly. Is this something to be concerned about?