Promiscuity: Give it up or play along

I'm a 19 year old fresher who is naturally very outgoing and flirty. Since coming to university I've noticed I get hit on a lot and I flirt back. It never usually results to anything but some nights it does. This doesn't happen often (4 in total) and to me it's just a bit of fun. All the guys I do know pretty well and it's never awkward afterwards. I still talk to them on a daily basis. I only ever feel guilty afterwards when I know people are talking and gossiping about it (more anxious and paranoid) but I forget about it quickly. I'm not looking for a serious relationship or anything but how do most people think this might affect any long term relationship I might get into later in life? Thoughts/opinions or am I just being too paranoid? I know that when I do find someone i'd settle with that I would definitely stop but for now I enjoy the single life :$ Does this lifestyle need to come to an end? If not when is a good time to give it up? Does anyone else feel the same way ? Many thanks :) ps- I know i'll get negs and called every S word under the sun but I'd really appreciate it if you didn't. I'm really not and I'm actually quite sensible when it comes to it.

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