<human>: I've been on about 15-20 first dates since I started online dating about 9 months ago. I'm looking for a long term relationship, with the ultimate goal of getting married, having kids, etc.

I ended a 5 year relationship early last year. It was my first relationship, and we slept together within the first couple weeks of meeting. We were basically inseparable and our relationship was good, we just grew apart. We ended things on good terms last year and we're still friendly with each other.

With two of the guys I've met this time around, I slept with them on the first date. With both of them, we continued dating for about 6 weeks and then things sort of fizzled out, on their end. I was still interested, but they weren't making any effort to see me. One stopped responding to me completely, and the other just isn't making any effort although he will go out with me if I ask.

For the record, I feel great about having sex early. I don't feel shameful about having sex so early on. I love having sex and I feel more attracted and closer to the person. But if I'm sabotaging any chances of having these dates develop into real relationships, I can wait.

Is there any value in "holding out" and waiting until 3-5 dates, or 2-3 months, or something?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Is having sex early/immediately contributing to men losing interest in me after 6 weeks, or would those relationships have fizzled out anyway?