Oh, SadieMae. I'm truly sorry you feel this way. Sometimes I get waves of this, and it sucks.
When those feelings creep in, a couple of thoughts (or mantras?) help me to feel better.
1. "I'm an adult, and I can do what I want."
2. "They" (whomever you're thinking about) are not paying my bills, and therefore don't get to have an opinion on how I live my life.
3. Most people are so caught up in their own day-to-day lives, that they're honestly not spending too much time worried about what you're doing. Seriously, how much time do you spend thinking about other people's marriages or relationships on a daily basis? You're probably thinking more about your job, your family, the things you need to pick up at the grocery store, needing to schedule that dental cleaning, etc. Everyone else is thinking those same thoughts, except about their lives, families, errands, etc., and are probably spending very little time wondering about you and your partner.
Hope this helps you like it helps me. ♡