My bro finds me ladies!

[RomanticMan]

"Hey man, would you please stop setting me up with different women? I just want to screw around right now, and I'd rather not end up hurting the feelings of your friends or your wife's friends when they realize I'm not ready to settle down."

^^ There you go.

never got a gf or bf, so he knows I'm a quite settled down person. Still, I can tell him that everyone has a life and nobody should meddle with others life.

[sillyboy86]

Tell him your quite capable of finding/pursuing a relationship under your own steam, and you'll do it in your own time at your own pace. Let him know that his meddling is interfering with your studies right now and is not appreciated.

This. I agree, it's the most gentle way to say "mind your own business"...