I've recently fallen passionately in love with a young woman, we've been constantly and vigorously sexually active for about a month. A few days into the affair, she told me that she was going to Cozumel, Mex for four nights/three days with a female married friend and two male friends, both of whom are gay but one of whom is a prior boyfriend (about 5 years ago). A week into our relationship, she told me that the ex-bf wanted to sleep in her and her gf's hotel room because he was afraid the other male would either (a) come on to him strongly or (b) pick up a male prostitute and have sex with him in the room. She told me this in the guise of a story of concern abou the gf's relationship with her husband, as my love's ex had flirted quite overtly with her gf in front of the husband. After some discussion of this, she was upset that I hadn't told her not to allow him in the room. After getting a little annoyed that I couldn't order her not to go on the trip but could tell her not to let ex in the room, (since she's going anyway, I have to trust her, right?). She brought up the room thing again a few days ago, and maybe feels I am not being commanding enough in telling her no--which I did again. Tonight's her third night in Mex. She called me the first night, seemed sad, and said goodbye after a two minute conversation on gf's calling card (her cell doesn't work) after I somewhat insensitively responded to her "I miss you" with the comment that it'd only been half a day since I dropped her off at the airport. Adding to the suspicion is that she recently broke up an engagement because of an affair--though there was real sexual disfunction there, long distance, and a host of other issues. Adding to the concern is that ex has HIV+ bf whom he is cheating on. On the good side, though close to Cancun, Cozumel is not really a wild spring break destination. Also, ex does lives far away, and I am sure there's been no cheating on me prior to this trip.
Given my passion for her, I want to end this now to avoid future heartbreak if I am pretty sure something untoward has happened.
Any thoughts on my post, or suggestions on how likely I'm a cuckold?
All I can really think of is to watch her reactions on picking her up, see how much she volunteers about the trip, ask if she says the ex stayed in her room, and pay attention to whether she does her laundry from trip at my place. I fear she wants me to feel jealous, something I hate.