I am searching my conscience at the moment andhave the following question:
Is it wrong to have a friend(s) at a different location(s) who you go and see when in that area to have a few drinks (or not)end up sleeping with them and never be in a formal relationship with them?
My feeling is that it's ok as long as you are both clear on the fact that it is what it is and that neither person expects more than the other is willing to give.
1. Where should the boundaries lie though?
2. What if the other person has a partner?
3. What if you have a partner?
4. What if you both have?
5. What if you feel unfulfilled at home and behaving in this way has a positive effect on you.
6. What if you get too close.
brokendownangel
Pro 
If you are both consenting adults then I don't see it as wrong at all. The boundaries should be agreed by you both, at the outset so as to avoid problems later - but these things have a habit of becoming more than they at first seem! if the other person has a partner, that is their problem, if you have a partner, you are cheating on them and should look at why you have a partner at all. if you feel unfulfilled at home then do something to change it -we all feel like that from time to time, but it is not up to someone else to make us happy - that is our own responsibility. If this behaviour has a positive effect on you then that's a good thing, but not if it has a negative effect on anyone else. YOU WILL GET TOO CLOSE!