I feel as though I have this happening to me all the time now... I still love my friends but, sometimes it's better to move on. Just keep them in your hearts they may not make you worse but they will never make you better than you are. It's a hard lesson to learn!
Ask yourself; Is the person making you feel better about yourself, or worse? If they're making you feel worse, they aren't worth your time. You are a unique person worthy of true friends and true relationships. Don't miss people who are dragging you down. Feel good knowing that you're one step closer to finding the people who truly care about you :)