<human>: Summarize the given text in a few sentences.

Currently I am dating, lets call her Anna, for about 4 weeks. We met after she found out that my ex cheated on me. (they go to the same school and share classes) We really have a click and we already kissed. The only thing that bothers me is that she is in contact with the guy my ex cheated on me for and is currently dating my ex. Ex since about 5 weeks, afaik, maybe even longer.

They share classes on the same school so I am just ignoring but lately they talk a lot. Sometimes till late so I just tell her goodnight and am not bothering her anymore trough whatsapp because I dont want to become this selfish person that decides who she can or cannot talk to. I am not the one that decides that so I just ignore it.

But sometimes I just get agitated by seeing his face on her sellphone because it reminds me of how my ex talked to him. Should I bring it up to her this early on in the relationship, ignore it or just bail before it becomes worse. I really dont want to meet this guy but I am afraid it will get to that point in the future if I stay with Anna.
<bot>: current date of 4wks is sharing classes with the guy that my ex cheated for. They talk a lot together and I dont know what to do.