Question to the guys :
I'm abroad for 4 months and am due to come back in 3 weeks. I've been in a relationship for about a year and a half. 8 months ago me and my GF took a break because each of us went on a trip and we wanted to experience new things. each of us was with other people while in this time. we rejoined near the end of the trip, traveled together and then I went to a different country to work. she went back(we're back together).
now we keep in touch twice a week via phone and now she tells me that she made out with her best male friend. she initiated it. she said that she was feeling lonely and knew he has feelings for her. she now regrets it but I suspect she as well has feelings for him.
she and him broke up all contact. I'm returning in 3 weeks. I still love her but I dont know if I can trust her anymore, should I let her go??