Is my boyfriend out of line? boysthink u could shed light? girls maybe give some experiences?

ok so im totally in love with this guy who ive been seeing for 8 months. he has dated alot of girls before me and never said 'i love u' to ne one before me. i havent either but im younger and havent dated as much. anyway so the other day he calls me and i reject the call beacue im in the shower. he calls me a few times more and i do the same. when im done i go upstairs to my room which is a loft bedroom. i take the stairs at a jog and he calls again once i rech the top. i answer this time and act completely normal but he is all suspicious and asks where i am and who im with. i say im at homw with my sister and dad and he asks if im sure to which i reply 'no im joking, what r u on about is ne thing wrong?' his voice is hard and short and he asks me again where i am and i tell him firmly i am at home where else would i be and he says are u sure no one is lying next to you right now? why are u out of breath (the stairs at a jog not 5 seconds before remember) to which i reply with something along the lines of u cant be serious im all alone i just ran up the stairs. he then has the nerve to ask me the same thing a second time and im like No, and dont insult me by asking me again. i mananged to calm him down but he has it in his head that he cant trust me because recently i was meant to meet up with a friend of mine after uni to help him with an ignment. the guy means nothing to me im completely infatuated with my man but when i mention to him in ping that this is my plan he flips out and says things like ' No worries u want to meet up with guys i'll take girls up on their offer to hang out. i might be a little late to urs tomorrow i have this girl who wants me to hang out with her at her place.' even though my meet up is completely innocent when he reverses it it sounds like a betrayal and i get jealous. am i wrong to think he is over reacting??? or ahould i be more sensitive to his trust issues?? please help