I Am Feeling Frustrated

I know friendships take time to develop, but I'm being impatient. There's someone who I want to open up to me, but the person won't. I opened up a lot in the past, which I regret doing because I expected the person to do the same with me. I cut off from this person in the past because I wasn’t getting what I wanted out of the association. I changed my mind after the person sent me a new message out of nowhere. I think I should stop contacting this person forever. I feel angry with myself for giving this person another chance. I withdraw when people ignore me. This person does make the effort to contact me, but I can’t continue doing this to myself. I hate the push and pull, the cold shoulder and warmth. I don’t have expectations anymore.