<human>: Can you succinctly summarize the text in 1-3 sentences?

I am currently a freshman in college and I've been dating my gf since sophomore year of high school. I really have no complaints about our relationship other than the usual ups and downs. We have very good communication, and I have always been able to go to her about anything that's been bothering me.

One of my best friends recently visited me and told me some troubling news. Another friend of ours, Jack, recently told him and some of my other friends that he almost hooked up with my gf a few months before we started dating. I called Jack up to get the full story. They talked and sexted about having sex for a while (no pics). They would have gone through with it if she hadn't started dating another guy.
<bot>: Gf told me nothing happened between her and a friend of mine before we started dating. Now I learn from him that they sexted verbally and almost hooked up. Do I talk to her about this?