so as the titled said,i have a love problem..my crush rarely reply my text or chat but whenever we're at school she acts like she like me, calling my name and sometimes she act like a tsundere. it really confuses me, should i make a confession or not? thx for replying

I'm probably not the best person to answer this but I'll try anyway.
I suppose I could say that you should talk to her in private and tell her your feelings. As Dr.Seuss says "Speak your mind. Those who matter don't mind, whereas those who mind don't matter". In other words, if she likes you too then it's all good but if she doesn't and makes a big deal out of it then her opinion really shouldn't matter. I think that if she rejects you she will probably do it gently anyway.
I don't feel right just saying that though. It's not a simple thing.
I feel that we involuntarily make a big deal out of this and get really nervous and some quote like that won't be enough to build up courage. We humans are stupid like that.
If you are making a huge deal about confessing to them then first make sure that you actually like them. And I mean a real kind of liking them, not just that they are pretty or smart or something. Make sure that you like her for the right reasons.
I don't know how well you know her but please make sure that you do first. I don't know how love works but I suppose the first place to start is if you have some kind of unexplainable feeling that just makes the two of you just seem right together.
Around 5 years ago when I was pretty young I thought that I had a crush on a girl and lets just say that it didn't go too well. I don't know how old you are but I think that it's best to make sure that you are mature enough mentally for this kind of thing. I didn't even consider liking someone for a few years after that because I could tell that I just wasn't ready. You have your whole life to find love so don't just find the best you can find at the time. Find the perfect person. And be patient about it.
Another piece of advice is to not be desperate. You don't have to have a girlfriend so don't go looking for someone but rather just consider people. Make sure that they are actually the right person for you. Chances are you probably won't meet them straight away so it's best to just wait until you do.
My last piece of advice is to be open with them and be true about yourself. Don't put on a mask or act in a way that's unnatural to try and get her to like you but just be yourself (as cliche as that is it's true). You need to be entirely open to be in a good relationship so make sure that she's the kind of person who you can be open with. Also people can change so if either of you aren't getting it entirely then don't give up just yet. Try and learn together and figure out how it is meant to be.
I hope that at least some of that was relevant and helpful and not too cheesy or confusing. Some other threads that you might find interesting are my thread on not having real friends and the love thread with peoples opinions on what love is, how to find it, ideal relationships etc.

thanks dude,i'm gonna try my best now

She might not have the time, I and what really matters is how she treats you in person. I say go for it, confess :3