<human>: Can you give me the gist of the text in a nutshell?

I've [21F] recently realized that my SO [23M] has developed a passive aggressive behavior. He didn't used to be like this in the beginning of our relationship (we've been together two years), but we've been through a lot so I don't know if this has simply developed over time or if his true colors are starting to show.

He doesn't talk about when something bothers him, or annoys him, or upsets him. When he does, it's in a rude way. Instead he'll act moody, or just act like he doesn't really want me around or want to talk to me and when I ask him what's wrong he simply replies "nothing".

So then I just separate myself from him, and give him space. But it's gotten to the point to where he no longer gives me affection, we barely have sex, and I never know what mood he's going to be in that day. Is he going to be nice and loving this weekend? Or is he going to act distant?

He also has given me the "silent treatment" more times than I remember. We don't live together, so he'll simply ignore me. He won't return my phone call, and won't reply to my text message. (I've gotten to the point to where I'm so used to it, I only call once instead of blowing up his phone and becoming emotional like I used to). I never know when he'll decide to call me back, it always seems like it gets longer and longer every time.

It's weird, because we'll go months without him acting like this. Then all of a sudden, he becomes super distant and I start to feel like I'm being taken for granted and he does shit like give me the silent treatment. In the past, I would have to drive to his house and cry and apologize (for something I didn't even know upset him, something usually very small) for him to talk to me again.

So my question is, for those of you who have/are dealing with a passive aggressive SO, how did you deal with it and/or stop it?
<bot>: I have realized my SO has developed a very passive-aggressive behavior, and I don't know how to handle it.