I’m horrible at this, what do I respond?

Anonymous
A guy I’m only recently started texting just sent me a text saying “I might like you that much I won’t want to let you go” this is in response to me basically saying I’m not the type to sleep around and have one night stands (not those words exactly). I want to give a flirty funny response back that also shows I mean what I say when I say I’m not interested in sleeping around. I’m horrible at this flirting so I need ideas
I’m horrible at this, what do I respond?
3 Opinion