What butterty bull does this mean?

so my cancerian ex stopped talking to me since we had our fight/conflict 3 weeks ago because i kept asking him why dont we talk as much anymore and he got pissed.Called me overly dramatic and said i cant expect a relationship from him again. He texted me day after saying he meant what he said but apologized for the aggressive tone.He said "when you repeatedly ask me such questions it really irritates me too much and i run out of patience and calm.Hope you had a great day.Take care."
I didnt respond to that at all but he knew i read it.We stopped talking since then. I texted him 2 weeks later and i said "hi,we dont have to talk but just wanted to know how have you been".He immediately responded saying he's good and said "i dont have any problem talking though". We continued for an hr. He drove the conversation forward a few times and then it abruptly ended. I kept it bit formal.Then i called him this saturday weekend and we spoke for half an hr on phone.It was a good talk.We made each other laugh the way we usually do.He also made some sexual innuendos. I told him why does he hold grudges against me.He said "yes i agree it might feel so.There have been some posts and photos of you on facebook which i didn't 'like' though I otherwise would have since i did like them.I really have no explanation for this" Then amidst our talk,he said "few months ago i told you you are my long term investment. So in long term investments,you invest something and then dont give a butter about it.You then remain updated about short term investments because those are short term and hence need to be checked upon daily. And then after some period of time you renew your long term investment because it grows with time." Then he was called for dinner as it was late at night and there were guests at home so he said he has to leave for dinner and said he would catch me again after dinner or the next day. He just didn't.

Really don't understand what's happening here. Why would he say such things and behave such a way. Ohhhhhhh....

Fuck him. And never ever nag in any relationship.

Well, if he's an ex why WOULD you talk as much as you used to? I don't talk to my exes, I don't spend time with them. They're an ex for a reason. Seems he made it clear that he's done with the relationship. If he's still willing to be friends but doesn't want a romantic relationship with you then pushing for those types of questions is pissing him off because he thinks he made it clear.

As for his comment about you being a long term investment, either he means as a friend, or he's toying with your feelings.

thanks for the reply both of you.
@MoonArtist,i think you are right about me pissing him off if he's just willing to be friends and nothing more. No idea why he still makes the sexual innuendos though.Hormones,maybe? Whatever.
And perhaps you're also right about him calling me his long term investment as just a friend.Nothing more.
Thing with me is that i do wish for a reconciliation.Even if not now then at least sometime. I am not holding on in my life.I am moving on just fine with my studies,friends and family.I dont need to be in a relationship now or even anytime soon but i do wish for us to happen again because it was beautiful until i messed up.
Isn't there any remote chance of having him feel the same again? I know you can't really make anyone do something out of their own will but you can influence them ,right?