I am so glad I found this post. I know it is an old one but everything everyone has said really sounds a lot like myself.
I am 34 and have had many sh*tty relationship -- too many to count and finally got myself a really decent guy last year who I am now living with. But I am ruining it for myself. I am obsessed that he prefers younger women as when we first got together he made a few comments about teenagers which plays on my mind, despite nothing being mentioned for months and months and months. Not just that, but I am paraoid about another girl at his work that he used to fancy -- she didn't want him but decided she wanted to start sending him messages when he started going out with me. Thankfully he ignored her but it still makes me paranoid. I worry he is thinking about her, looking at her at work, flirting etc, etc. If I'm not worrying about her I am worrying that he is fantasising about having a younger model than me (by the way he is 44 so ten years older than me). If I'm not thinking of that I am worrying that is still in love with his ex who he has a child with and on and on it goes.....I'm never relaxed. The amount of arguments I have caused because of accusing him looking at other women. Some days I want to go to sleep and not wake up because of the mental torment that goes through my mind. The only time I feel at peace is when I am smoking cannabis and for some reason that calms my emotions and helps me to think logically but I just cannot reach that state when I am sober.
I am currently seeing a Psychologist and have been now for a few months. I only have a few sessions left and I am nowhere near better. In fact, the older I get the more I lose my looks and the more I feel paranoid that he will not be attracted to me and prefer someone a lot younger than me. He once made the comment that women tend to start looking really old in their 40s and this makes me feel so depressed.......I don't know what the answer is?? Smoke cannbis everyday? But even then that stops working after a time.