Why do i get so angry after being ignored or abandoned by a close one?

ok so its little things like.. me and my girl will be txtin at night. and if we get into an arguement and mad at eachother she will want me to leave her alone so she can not talk to me and just sleep. (sometimes she lies and says shes gonna sleep) well anyways i will say no dont sleep yet. i dont wanna sleep bein mad at eachother. ill want to fix the situation before we go off to sleep. most the time shell just not text back. and then ill just keep texting but get no reply cause shes still mad. then it makes me so angry so ill start calling and calling. she shares a room with her mom so she cant answer. but it seems i disregard that and just call and call so she'll txt back or maybe to get her angry just cause I feel angry. most the time it works it wont allow her to sleep with her phone steadily ringin and we'll fix the problem but not the point. when she ignores the calls it just gets me more and more angry. i will just call until its ignored then press the call button as soon as my fingers can move. sometimes im left crying cause i dont have the chance to fix our arguement. the main point is that i feel i get angry to the extreme. like i have super intense feelings that i cant control. i feel that if we dont end our night on a good note then i do not want to sleep, do not wanna eat, i even find playing my video games boring at this point. it makes me feel weak when i know im stronger than this. so then ill end up getting angry and leaving a long aggrssive mean text or voicemail. not disrespecting her though or name calling. i wouldnt do that to her.. but ill make her feel bad. the sad thing is about 30 minutes later i wont feel any anger at all anymore and feel like i overreacted maybe pushed it too far. like the depression will just go away in a matter of minutes. and at that point ill feel like 'ok i dont care its nothin to me.' which is how i wanna feel when the situation happens..but instead ill feel intense emotions. am i bipolar.. separation anxiety.? i feel that way cause if i feel shes mad at me i get vulnerable and desperate to talk to her and fix it. that i cant sleep without knowing shes ok. im a scorpio if that matters. it must be a mental thing but i need explanation on whats going on in my head thats causing this. i dont like these intense feelings i dont like feeling emotionally weak. another thing is i have nobody to talk to. making friends is not a problem im popular in my school/neighborhood i have many many friends. but none worthy of talking too for main problems.. i guess yu can say no REAL friends. my mom i cant talk to her like that.. were not emotionally close. she worries about her own relationships more than seeing if im feeling ok. (emotionally.) plus theres no father around. brothers nd sisters are never home. i guess since i got my current girlfriend (goin on 8 months) shes the only one i have felt im close to and can talk to about everything. so when were mad at one another i have no where to go. nobody to talk to. is this what causes me to get intensely angry or sad.? my mom would ignore me a lot too from childhood even to now. (im 17) do i not like being ignored cause i hated it when my mom would do it.? if need more explanation im willing to answer whatever question to get the answer i need. long detailed answers are much appreciated.