Take the guys advice, and learn from our experience, we are not their "friends" we are their customers, clients, paycheck.
Don't avoid her totally, just spread out your visits, see others and then see her only half as much, then even less.
It's good to have at least 4 regular places/girls in your rotation.
It helps and gets easier over time, believe me, some of us learnt the hard way, its hard to separate emotion from the physical.