In general, you need to have more confidence in yourself. I’ve never met a single woman that was in to insecurity in a relationship. You’re awesome as shit and she is lucky to have you toss penis into her.
Missed if you said it, but how long have you been together? Sometimes , couples run out of shit to say to each other because they do so much together and spend so much time together. So it may seem they get along better than you just cause they have new shit to say. If you want on a trip together, there isn’t a lot for you to talk about. Her ex going somewhere has something to share with her that’s new.
My wife has a guy friend that she gets on very well with. Put the 2 in a room together and they never shut up and laughter abounds. It doesn’t bug me one bit. For several reasons;
They don’t see each other every day. So they have shit to say to each other and stories to tell/catch up on
I’m confident in my relationship. My wife would be a dumb bitch for leaving me. I’m not poor, not ugly, I’m an outstanding father, a good husband and an adequate lover.
We have time together. We have built a life together. My wife isn’t the kind of woman that would throw away everything we’ve built for a fling or for someone other dude.
I say let her visit the ex without you. Give her the best sex you possibly can the day she leaves. And if she comes back to you the same, you know she is yours.
The old proverb; if you love something, let it go. If it comes back to you , it’s yours. If it doesn’t , it never was.