Recently I've been seeing two girls. It's early for either of the relationships to be serious yet and I'm not sure whether they just want to have fun or not. I had sex on the first date with both, which I usually see as a sign that things aren't going to be too serious, but at the same time I can't avoid feeling a slight guilt for dating them both. Both girls are lovely and I got along really well with both of them. How do you reckon I should handle this situation?