I love the game, but will there be a steam version, where we can also buy it and support it?

Yes, steam please!

I prefer buying games via steam since it's simpler, easier, and update hassle friendly also i have a lot of steam wallet xD

I know on twitter, ages ago, they mentioned it once. I think it was a non-committal  "we're not sure/we'll see" attitude. Not sure now.
I really want it on steam. I like the community features, even for lewd games, idc about that. lol, plus this would easily be in the top gay games on steam without any effort. There's really not a lot of options there for gay content yet, particularly games with this level of quality. If you exclude visual novels this would easily be the best actual game.

Chewy has commented that they're not going to release on steam immediately,  but it is a possibility; I think that its likely to remain here until the development is finished.