Should I try again with my ex or just move on?

A couple years ago I thought I’d found “the one”. Then my cousin was accused of a crime, my ex was with me when I found out. He consoled me, said he needed to run an errand, disappeared for a day and then popped up at my apartment and said he had gone to the police with this information. Ultimately my cousin was innocent but that situation completely destroyed our relationship. We broke up and went no contact.

Earlier this summer I bumped into him, we chatted and it felt like no time had passed. I’ve realized I still love him. We’re both single and I’ve spent a year in therapy learning and growing without dating. I’m ready to put myself out there again and want to tell him how I feel but maybe I should just move on and find someone new.

My friends are 50/50 on the issue and my therapist says I should follow my heart and embrace my truth. I figured I have nothing to lose by asking here. Should I be open with my ex about how I feel or cut my losses and move on? Any advice is appreciated!!

ETA: we met in our early twenties, the family situation happened during our mid twenties and we are 26F/27M now.