What can I say to my roommate before I leave or after to let him know I want him to chase me again?

I moved in about 2 months ago and hooked up with my roommate twice, I wanted it to continue, but he voiced concerns he’s about 10 years older than me, if he is honest and does want to try after I’ve moved, how can I text him to let him know I want to get to know him without spelling it out? That I want him to chase me like before? I was thinking of saying this if he does text. Hi, I want to have the flirty vibe we had before and when I moved in, now that I’m out I want you to see me as more than just a roomie and know me. I don’t know, any thoughts on what to say? I talked to a guy and they said you shouldn’t have to spell it out for him.

What can I say to my roommate before I leave or after to let him know I want him to chase me again?
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