Haha what. This is like asking "do girls have logic". (The answers are yes, just to clarify)
To be more constructive, based on your second line it sounds like you're talking about romantic relationships mainly. Male attachment is quite a strange beast. In general, I would say that initially males are more likely to be less committed and to function on attraction rather than love. I reckon most guys could pretty easily separate sex from love in a one night stand type of scenario. However, when they have been "hooked", so to speak, commitment and attachment can grow to become very strong. Indeed, men are far less likely to file for divorce, those who do cheat nearly always end up telling their partners out of guilt, and I believe it has been shown that men, in contrast to what you would expect with biological considerations, benefit more from marriage than women do.