Most Helpful Guy
I'm guessing you are getting feelings for one of your friends with benefits . What a lot of people describe as falling in love is a result of one of two things, the first being a sacristy mindset. If we believe it will be difficult for us to find someone else we are more likely to cling to whatever option we may have at hand.
The second would be people who have some sort of void in their life and they look to someone else to fill that void, in short placing the responsibility of their happiness on someone else.
If your dealing with a guy who has options and knows what he wants in a relationship and you do not fit that criteria for whatever reason you are out of luck.
You need to find out how he feels about the situation and if he does not feel the same you need to cut ties so you can move on.