<human>: Can you give me the gist of the text in a nutshell?

My ex broke up with me two months ago after being together 10 years. No reason was given as such just that he didn't know how he felt, and that he didn't have the desire to marry me / buy a house when he thought he should have those feelings. 

There has been some contact since the breakup but only over our flat / bills etc.
I told him that I miss him and that this all feels so wrong but his reply was " I know. I'm sorry".

I am hurting so bad and crave to have that attention so I am wondering, how long do you wait after a breakup to be with someone else? (Sex only not meaning to have a relationship after)

Part of me wants to hold out and wait for my ex in the hope he will come back to me. I'm worried that if I sleep with someone else and he finds out it will ruin any chance of us getting back together.
<bot>: Want physical attention as I feel shit. Have the opportunity to have sex with someone. Don't want to in case it dashes any chance or hope of my ex and I getting back together.