Sometimes friends like to cause trouble between a couple because it's exciting for them or they are jealous.
One of the worst things to hear is that the person you care for is having concerns, but hasn't voiced them to you first.
Many times it's because they didn't follow the tips above, they moved on to date other people or went their separate ways after graduation.
So don't feel bad if you end up breaking up with someone you thought you would be with forever.
This is especially true if your friends do not like your boyfriend/girlfriend.
Talking badly will only give them more ammunition to throw at you for the reasons why they don't like him or her.