<human>: I [27M] broke up with my ex-girlfriend [25F] of two years almost a year ago because she was returning to her home country. We both knew a LDR was no viable. I originally planned on traveling back with her but she had school and wouldn't have the time to host me.

I have since started a relation ship with my best friend [27F]. She ended her previous relationship about the same time I did and we got close. We dont share the strongest relationship but we genuinely care about one another. Although we see each other exclusively, she doesn't consider us officially a couple. Part of her reasoning behind this is because we would then never break up and always be in each others' lives.

My ex is now suggesting I come visit her this summer. She's not aware I'm seeing someone else now but has made clear that we're just good friends now before. I've always wanted to visit her country, and I would like to see her again. With us both on a break from school and work this summer, this may be the only time she would have to host me. She has to commit to her new professional life after summer. Sure, I would have a chance to see her again in the future regardless of if I go now or not, but it may be many years later and we wouldn't be spending a lot of time together.

I go now, it would also affect my relationship with my best friend.

Provide a brief overview of the text.
<bot>: I want to take what may be my only opportunity to visit my ex-girlfriend in the near future, however, it would jeopardize my current relationship with another girl. What should I do?