Hello everyone,

First time posting here, hoping for some advice cause I am kind of at my wit's end.

My girlfriend and I have been together for a bit over 2 years, and where open from the start. From the beginning, I communicated my boundaries that anything sexual is fair game, but I would not be able to deal with my girlfriend having romantic relationships outside ours (I admittedly have abandonment issues)

It has worked great so far. But recently, my girlfriend met someone on a night out. They made out the night they met, which, still fine.

But ever since, she has been texting with him nonstop. It is been 2 weeks. We talked about it and she told me I have nothing to worry about, that she limes having someone to flirt with as an escape from our everyday (we have twin toddlers and stressful jobs), and that it makes her feel good that someone younger is interested in her, and that she expects to lose interest at some point. She offered to show me their messages, which I refused. I honestly do trust her that she is honest with me.

But I can't shake an immense fear that it is gonna turn to an emotional connection, and she is going to leave me. It also doesn't help that she is not in the best mood lately and I have been sleeping on the couch a lot, cause she says she needs the alone time after the kids have gone to bed.

I don't want to confront her about my feelings, cause a) I feel that they are mine to deal with and b) I don't want to turn something I to an issue that ultimately might not be.

So, tl;dr: How do you cope with fear of losing your partner in an open relationship?