what makes a man lose interest to a woman?

I think that it's actually one of the reasons.some men lose interest with their partner when they found another beautiful face.another reason is they also got bored with their relationships.when their partners stop improving themselves,they get bored with them.some are egged by the single guy friends at how much fun it is at being single(freedom,hook-ups with many girls),and when they're encouraged they end their relationships with their partners.

loads of possible reasons just as there are for a woman losing interest in a man. People change, grow apart and sometimes just want something/someone different in their lives. What seems 'cute' and endearing when we first meet someone can become really irritating after 10, 20, 30 years! Some people just need to re-discover themselves after being part of a couple for a while.

A man lost interest due to have some misunderstanding with womens . sometimes there is some conflict between them always means also lose interest . The main thing is both of them having echo problem