please read and give me some helpful advice

so I just got out of a relationship not even a month after our 1 year, he gave me a promise ring and we were so so happy and then I made one mistake and he just threw me to the side like there was still no feelings there at all. He chose his family over me which I get but i asked him to at least try and to at least try and make it work but he said that he just couldn’t. I know I should move on but I just really don’t know how to I don’t know what to do with myself cause I have maybe 2 or 3 friends and they usually are busy with their lives. Everything is just so sudden and fast and I just don’t know what to do with myself. We went at it with each other but after talked calmly and I feel like I don’t and can’t feel anything anymore. I don’t know how to flirt or talk to other men or anything I just want to be in love with someone and to give what I get and vice versa. Ugh please help