Hit the gym (if u can), just focus on yourself, exercise, read self helping books, focus on what you're doing now (studies, work..) And more importantly build your relationship with God. I've seen Jesus actually doing miracles. Work on yourself bro, and trust me there will come a day that you wouldn't want to be with her, even if she wants to. Just be better. One more advice, don't avoid reality. Don't do anything to make the pain away (don't be sleeping, smoking, drinking the pain away. Also don't be filling the void with someone else (if u ever thought of these)) Just be sitting with it. Meditate and tell God about it. Pray for healing and trust me, you will be fine. It might take a lil time, but it'll just make you the best version of yourself. Remember that you ARE loved by the LORD, that He gave himself, died to save you. Be here for him. And be here for your family. This world needs you and you need You too. Be brave brother, you can do this🫡