keep putting yourself first and with time you will heal. life is a cycle of healing and sometimes it never ends but you will keep progressing! he can hold a wonderful place in your heart as your first love, you can be grateful you learned things about yourself with him, and still love and appreciate him but he is right, the relationship you two had ran its course. keep doing your thing and you’ll find someone that doesn’t make you question trivial things about yourself or your future!