(from askmen.com)

Let's face it: the majority of relationships end in failure.  So before you invest too much time and energy into someone new, we've got four signs from "Ask Men" that your new boyfriend or girlfriend is going to break your heart.

1. They have no old friends.

If you're dating someone who has no friends they've known longer than a few months, either their friends bail because they're annoying, or they need constant change.  And neither of those is good for you.

2. They need a lot of space.

Independence is good as a personality trait, but someone who CRAVES their own time and space almost ALL the time usually gets tired of anyone who takes it up.  Even if they like you.

3. They're not grounded.

Some people are just never satisfied with what they have, and that makes them ambitious.  Fine.  But having high standards and ambition is one thing...Expecting wealth, constant attention, fame, or the perfect relationship is another thing, and it just isn't realistic.  And they'll just leave you when something better comes along.

4. They already had someone when they met you.

If you hooked up with someone while they were dating someone else, guess what: There's a good chance they'll do the exact same thing to YOU down the line.