[At this point, Ren's gotten used to how a lot of versions of himself are with Akechis, even though he himself is dating Yusuke. His smirk changes to a simple smile as he decides to drop any teasing, and be more sincere.]

Congratuations, even with it being informal. Everybody has to start somewhere and have different paces. Or they just want one thing or the other, or not at all.

I'm sure over time your Ren will get more comfortable. Just give him some time and patience.