Should I sent a message to my ex?

My ex and I broke up 6 monts ago. We stop to talk for almost 4 monts then he started to stalking me on FB and I saw him and we had sex and he said that he couldn't have a relationship with me.
Now two months later he started to stalking me on Facebook again (I deleted him but he likes my pics ) ..
I wanna send him a message but I'm afraid that he just ignores me. I don't know what to do.
Updates:
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I don't know if it just for sex.. because he use to said that I was always so horny, and sometimes he just wants to talk and do another stuff..
Should I sent a message to my ex?
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