Is it normal to receive blowjob from an old man

I just moved to a new house. There is an old man in the neighbourhood. Yesterday he invited me for tea. We had tea and had a conversation. Suddenly our topic changed to sex. At the end he gave me a blowjob (he was good at that). He also said he wants to fuck me, but I said "next time". I felt awkward after that but I really liked it.
Should I continue this?