Clinginess and vent about relationships

In my past relationships, I have mostly been insecure and clingy. I'm not really clingy but I can get jealous. I regret being insecure because that's one of the reasons why my relationship fell apart. There are other reasons but it has something to do with him. My first ex-boyfriend cheated on me. I know because he wanted me to prove that I wasn't cheating on him with my friend. It's usually the ones who are paranoid who usually cheat. I call myself a demi-sexual. I can't get feelings for someone until I really know them or develop real feelings for them. This is why I don't understand cheating or the need to have sex with other people or even strangers. When I had my first boyfriend, I just went with it. I didn't understand why people had relationships. I'm ok with being on my own. I can stand on my own two feet. Ever since my last relationship, I have done some soul searching and figured out stuff. I was wondering how you could overcome your insecurities and if you could offer any advice. When I think about this topic, I usually feel self pity and I wonder why me. I'm not attractive, I'm shy and I sometimes speak in a cold way. I don't know why a guy would want me. I worry about having a family and a husband. I doubt it will happen. I understand if I really like someone and I'm friends with them, it can potentially become something but for now I'm concentrating on myself. This is just a vent and I need to get this off my chest.

The key is to learn how to love yourself.... perhaps work on this if you have a therapist, but self-love will diminish and break those insecurities. You have to see value and worth in yourself and feel worthy of love first. People don't have to be beautiful on the outside in order to attract a partner.... it's what is on the inside that truly matters. So embrace and love all the wonderful and unique qualities you own, because I am sure there are many!!! It is good to concentrate on yourself and to feel good alone.... but if you truly want a life partner, self-love is necessary.