“Explain it to her clearly”
The worst thing in a relationship is when the parties involved don’t see eye to eye on what the relationship means, especially how long it should last or what you should get out of it. If you’ve been in a committed relationship and had a fling on the side as well, maybe you’ve had this problem before (hopefully not) or are wary of it happening in the future – you start up an affair with a hot girl on the side, and then all of a sudden she’s asking you when you plan to leave your wife or serious girlfriend to start your new life together. This is something you want to avoid at all costs, since it can lead to some incredibly sticky situations down the road – for this reason, it’s important that when you start having an affair with any woman of any disposition or age, that you lay out what exactly you want out of the relationship from the start so there are absolutely no misunderstandings.
Sometimes, sleeping with a hot girl on the side isn’t exactly planned; if you’re attracted to each other and the opportunity presents itself, there isn’t much to be done about stopping it. However, whether that was the case with you or not, it’s important to be direct and clear with any woman you’re considering having any sort of relationship with regardless of its nature. Let her know that you see your relationship with her only as a sexual relationship and that you don’t want any romantic feelings involved. The key lies in being firm, but not rude. You don’t want to be that guy that essentially tells a girl she’s worthless and that she has no value to you as anything more than a bed partner, so be careful. Let her know that while there’s definitely some attraction there, you already have the committed relationship you want and are only seeking a casual fling with her. Chances are, since you’re both adults and can have the conversation in a mature manner, it won’t be an issue.
“Don’t set unrealistic expectations”
If a girl you might have been casually chasing seems like someone who could easily become jealous or get attached too easily, it might not be in your best interest to pursue a relationship with her. She might be gorgeous, and she’s probably a great person, but you need to step back and evaluate if starting any kind of relationship with her is a good idea for you, or you could end up with more trouble than you can handle down the road, the worst of which could be your wife or serious girlfriend finding out that you cheated on her. Make sure you don’t automatically assume every girl is going to get attached too easily, because then you’re operating on stereotypes and that’s going to be a huge turnoff to most girls you might be interested in getting with. How your affair begins, continues and ends relies on decisions made and personality and sexual compatibility at every step of the way.