Tiny,
I’m very close with this tiny voice telling me, “he’s a cheater, so CHECKALLHISMESSAGESANDPHOTOS.” That never led to any evidence, though. 😀 I’m not sure if this is good advice, but that helped me a lot.
First, I talked to my then-boyfriend (now husband) that if one of us ever feels love towards any other person, he must tell about that. Because for me, being kept in the dark is worse than being cheated.

Then, I just went with the motto, “If the person chooses someone over me, this person doesn’t deserve me.” Yes, this is hard to accept. I always prepare for the worst. But I don’t feel anxious about it because it won’t make me bad – it would make HIM bad.

And finally, when a panic attack comes in, I think like, “well-well, what do we have here – let the show begin.” It won’t kill me in any way, and it won’t even injure me somehow. So, if my brain wants to “have a party,” I’m in. Yes, I will feel not well. Yes, my day may go sideways. But it’s sometimes cool to have a bit of spontaneity in my life.

As the bottom line, I want to say that you’re amazing because you decided to consult a professional. I’m sending you a bacon of goodness and support. <3