First of all, thank you for the comments I've received so far. And please as I am on a tug boat and typing on my phone, excuse the typos. Now, as to our conversation at the time. It started out regular and pleasant enough considering the topic. She was asking my advice on how to break it to her 10 yo. Son that his nearly nonexistant father was shot in the face recently and that he's most likely going to die. From there it rolled into relationship issues she had with him and past infidelities on both their parts. Now I never would have asked this question, as I know it's not something that I really need or want to know, but she had told me in the first few months of our relationship that she had 7 previous sex partners. And from some of the information I was gathering that she had not been truthful with me and that 7 was not the number of men she had been with. So, then she told that she had averaged 1-2 a year since losing her virginity at 14. But this was a guess. So then she tells me around 30. Okay, that's fine. I was upset she had lied, I hadn't really ever caught her in a lie before. I could see how that would be embarassing and why a person would lie. Okay, still really not a problem. Can't blame someone for their past although if she says "around" 30 it's probably more like 50 who knows maybe more. Typically I wouldn't doubt her but she's being vague. Still I think I can get over that. But, then as she's speaking about her son's father she off handedly mentions that she had a threesome with him and his friend. Alright, now I'm getting sick to my stomache and have definitely heard enough. I know more debauchery and most likely to a greater degree has gone on than this. I'm a fairly rational person I'd like to think. And am not particularly conservative with sexual matters, although this was a bit much and the imagery and unknowns are making have some extremely, to put it mildly, unkind thoughts and feelings about her now. I'nm doing my best to check my language. I spend half my life with guys on tugboats. Unkind is really not how I would describe these thoughts and feelings. I am on a boat right now and will be for awhile yet before I see her again. I would cut her loose most likely except other than this I really do love her she is a great girl. I don't believe she was trying to make me jealous. I know what that's like.
We have just moved in together into a new house. Her children basically look to me as a father figure. I'm 99 percent sure that she is faithful, no one's 100 percent sure of anything when it comes to others.
The lying worries me a little and angers me somewhat. The rest makes me sick and changes how I view her quite a bit. I know there is probably nothing more than to get over it or don't. But I feel like I need to do or say something. I'm really don't know how I feel about being with her in a this sort of relationship anymore. It still makes me physically ill to think of it and when I get home and have to look at her or even go to bed with her. What's going to happen then? Even if I held down the vomit and tried to put on a pleasant face I'm not going to be able to have sex with her. I know it.I am not typically a dramatic person quit e the contrary actually. I'm very concerned about being sick and disgusted part. Ugh

not sure what to do at all or if there's anything I can do.