Relationship advice please ?

My ex has always and will always have a special place in my heart. We’ve been through so much and we’ve always managed to be friends somehow or come back to eachother even when we go through periods of seeing other people. Any time I’m with him my heart feels like it’s at home and I get butterflies, I know he has feelings for me too but his friends tell me he could never get back with me because it wouldn’t be the same because of the guys I’ve slept with while we were broken up. His body count is 2 and mine is 7. I feel like a whore and I just want him to know what no matter what a number is he’s been the only person I’ve ever loved. My heart is beating fast just thinking about him. I know he feels the same about me, he just can’t get over the fact of what I did with other guys. Please give any advice on what I could say or do to just let him know that I love him, so much, and nobody has ever made me feel the way he does. Thank you! (Please don’t leave anything negative, I already feel very bad and if I could take the numbers back, I would in a heart beat, I don’t ever want to cause him pain, i was already heartbroken about him having 2 so I can’t imagine how he feels about me having 7)