Don’t you wish there was a guidebook that could tell you – early on - whether or not your relationship is doomed? Well, according to CNN’s romance expert Amelia McDonell-Parry,there are tell-tale signs that the person you’re dating isn’t the right match for you. For example.

Telling half-truths to your friends: You’ll know a relationship is doomed when you start telling your friends only part of the story about an argument with your boyfriend or girlfriend. You want to vent, but leaving out the part that would make your friends scream “They’re not right for you!” is a red flag. Chances are, you’ve already judged your mate’s actions yourself and are afraid your friends will validate what you already know - that you deserve better.

Residual immaturity. No guy completely grows up, but a fanatical interest in something completely juvenile will wear on you eventually. If he’s spending all your combined savings on comic books – or staying up late playing NCAA Football on his PS3. Pretty soon you’ll stop feeling attracted to him. A woman wants a man, not a child. Another sign that your relationship is probably doomed

If he’s a Momma's boy or she’s Daddy's little girl. If either one of you respects the opinion of a parent more than the opinion of your significant other, you're headed for trouble. One last thing that’ll kill a relationship: a King-size bed. Even if you go to bed mad, something about a forced snuggle in a small bed is like an unspoken “you’re forgiven.” It allows everything bad between you to dissolve away.