Love this question! What I learned is that your relationship with yourself needs the same things as your relationship with another person. So how do you fall in love with/enjoy the company of someone else? Dates, quality time, fun activities, kind words, physical affection, etc. So you just need to do those things for yourself. That could look like solo dinner dates, exploring a park/bookstore/museum alone, journaling affirmations or kind words about yourself, treating yourself to a nice meal (home cooked or otherwise), exercise, masturbation, otherwise getting in touch with your body, picking up a fun hobby, having a spa day, things like that. I think a really key thing is getting comfortable being alone with your own thoughts and silence- without your phone/devices/distractions. It may take some time but eventually you will really enjoy that alone time and peace.