Is this love or am i just going crazy?

theres a boy that i been txting for a long time..we hardly ever talk on the phone cause it seems like everytime we're on the phone there's nothing to really talk about.we went out for about 2 weeks be4 i decided i wasnt ready to be with no one because we never saw each other.we been broke up for like 5 months and ever since he never called me or txt.sometimes we would txt each other for 2 days then stop txting for weeks at a time. I never can get him off my mind. Im alway thinkin about him and i dont know why.I tried to forget about him so i stop txting him but everytime i think about something he pops up in my mind and i get a warm anxious feeling in my stomache. Iwant him to call me or txt so bad. Recently we started back txting as friends and flirting but i feel like he's playin me cause he thought i was playin him..so he wants me to feel how he felt (i think)...i know he probly has lil feelings for me but i have a feeling he's hiding something idk..does anyone knjow why he's acting like this and is it true that i might be obsesses with someone just from txting......oh yea, i also call his phone form private just to hear his voice, i go on his myspace almost everyday, and i relate every love song to him....