Should I find a way to tell him or not?

I had this guy friend. We used to flirt but nothing physical ever happened between us until recently. We ended up hanging out and hooking up. He told me that he was allergic to latex and would pull out. The first time he suddenly stopped, put his hand over himself, and turned away. I figured he pulled out. Obviously, sperm leaked out and went inside of me before he pulled out or he lied about pulling out. He immediately blocked me after that day and now I'm pregnant. Should I find a way to tell him?

Should I find a way to tell him or not?
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