Do you think he had an attachment to me?

I was hooking up with a guy I had feelings for named Nick. I don't know if he liked me with the strength that I liked him... or even liked me at all. He seemed like he could take me or leave me. One night this cute guy began flirting with me in front of him and he went nuts. He began chasing me all over the place and trying to break us up. When me and the new guy kissed... he went crazy chasing me and trying to have me. Do you think this reveals that he must have liked me deep down to some extent? Or simply just want to retain power over me.

Do you think he had an attachment to me?
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