My sister's ex wants a sugar relationship with me. Girls, should I try this?

My sister broke up with her ex maybe a month ago.

A few days ago he texted me to say hi (he had my number in case of emergencies) and made small talk so we were just texting for maybe an hour and then he talked about how he wants to start a sugar relationship with me, how it would work and all of that and I was like hmmmm I have to think about it. It was really unexpected I had no idea he even wanted me. He's attractive and I would be down but I'd have to hide it. My sister and I don't live together she just moved into a new apartment.

I'm 18 and he's 41. Any advice?

Updates
+1 y
Thanks for the responses and private advice for this. Now that he became my boyfriend on the d/l but he wants to make everything public now. I'm not sure I'm ready for that yet... advice?
My sister's ex wants a sugar relationship with me. Girls, should I try this?
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