Thank you all for your replies, info and support! Just for the record, we had expressed that we really liked each other. There were several comments made that made me feel like perhaps he was not sleeping with others. It was when he mentioned taking our kids bowling that I really asked questions. I surely wasn't ready to involve my little girls as that is SERIOUS business. I wasn't totally shocked when he said he was sleeping with another person but we had been seeing a lot of each other and I didn't really think he had much time outside of that to date. He has a friend with benefits. This wasn't the breaking up point either. He had serious communication issues and to me communication is so crucial to a successful relationship. It was a bummer because where I live it is very conservative and close-minded and I could not be with someone like that. I also had issue with introducing ourselves and our girls to each other. He didn't seem to think that his 12 and 13 year old daughters would realize there was more than friendship between us. My girls (5 and 8) would realize. Then again, I have my girls 95% of the time. . . They know when I go on a date because it means a sitter, lol. So think good thoughts for my dating life. It is hard to be 41 and not have a live sexual outlet!! I appreciate your posts as I have been a lurker for a few years. You guys give awesome advice! Anyway, this post was mostly out of curiosity because my younger friends (20s) felt like people who sleep with more than one person at a time were scum while some friends more my age feel like it is not so uncommon. Like I said, I don't have a problem with it as long as people are safe and honest. I would like a monogamous relationship at some point and would not want to be with a serial dater for long but am game for seeing if there could be something more. While I desperately miss sex, I am incredibly lucky and happy with my 2 amazing girls, house and a teaching job in a state that just laid off 26,000 teachers. Now that is NOT the kind of laid that is good. Thanks all!