<human>: My now ex-wife cheated on me after being married for 20 years.  I think I've got over most issues related to that but I recently started seeing a girl (after a long period of not dating).  I've been going out with her for about 3 months now and everything seems to be going great.  

She swears she would never cheat on me (she knows what happened with my marriage) and I believed her near the beginning of our relationship but as we have grown closer, my insecurities stemming from my ex-wife's cheating are begininning to bubble up a bit.  I suspect this is because I've grown to really like this girl and I worry about losing her.

Note, she has given me not indication of cheating.  She doesn't drink nor does she go to bars or anything (I don't do this stuff either-not that there's anything wrong with that-it's just not for me.)  She has a teenager whom she raises alone.

How can I force these stupid thoughts out of my mind?  I just really like this girl and things are going great...maybe too great.  I'm scared of losing her.

Can you provide a brief overview of the text?
<bot>: Recently divorced guy has a great thing going with new girlfriend but worries about her cheating due to ex-wife's cheating.