The question is "can you control your feelings?".. I bet you may be cautious but by the time you know.. you've fallen too deep already.
honestly i have grown to controlling my feelings for somebody, even though i like'em very much I will only give them just enough admiration and love. Example, I can give them 10 out of a love scale from 1 to 10 but will only give them a 7, cus that works better for the relationship, and will also make her want more and stay interested. And should things don't work, my heart and head won't hurt so bad.

I believe for guys, the key is to only be happy in a relationship and not fall in love or be in love, that part is only for the girls.