Never ever gauge a man’s interest in something so informal like FB, texting, etc. Always pay attention to their “ACTIONS” by putting in a lot of effort to schedule dates and time to be with you IF they’re emotionally available.
Anytime a man tells you “I’m not emotionally available”, “not looking for a relationship”, “not wanting to get serious”…BELIEVE HIM. Just because a guy hangs out with you on a casual basis is meaningless and will not change how he feels about an individual. Personally, I absolutely believe he likes you as only “a friend”. Guy’s are able to instantly categorize women they come in contact with by placing them in boxes, e.g., friend only, sex buddy/FWB, potential GF, etc.
The fact is he never pursued you, found another lady, and told you he wasn’t emotionally available which is GUY SPEAK for “I don’t want to be in a relationship with you”. He showed you through ACTION his true lack of interest in you romantically so I would try to stay from him if he causes you so much craziness. Sorry, but you really should give this one up and only focus on guys who do the opposite of what he did.