Heartbreak after heartbreak

I've had heartbreak after heartbreak giving a guy a chance or taking that risk. I see all my friends and ladies up here either married, been with there significant other for a very very long time; it makes me jealous. I know every relationship, marriage has there up and downs and that I would want my own type of bond. Trust me I do! I'm just wondering why I'm always getting left or treated like shit? I'm so loving and caring towards everyone i adore & somehow someway they are fine. Than there's me; crying, having sleepless nights, not eating, wondering what I have done so wrong? I'm hurting. I just want the hurt to end already. I've never dealt w heartache so well! I always want to stay under a rock, lock myself in my room, not go to work. Smh just want to isolate myself from there world! Just need some encouragement from u beautiful ladies. I cry nonstop I want it to stop. Who else has been through this? Have u had any luck? Personal conversation anyone? Need some distraction lol I don't know ladies.