possessiveness??

i was talking with my boyfriend today and i was telling him how i was making female friends online (because tbh i’m pretty lonely and i don’t talk to anyone else except him) and he kept asking why i was talking to strangers and i just kept telling him they were some girls i met online and he kept getting upset? i told him i just wanted to make friends because this summer i’ve only talked to him and my family and he kept saying that i shouldn’t be talking to anyone else except him. i told him i had a number of some guy in my math class so we could discuss class and i asked him if i could talk to him and he got pissed and said i shouldn’t be talking to any males whatsoever. especially not have their phone numbers. he asked me to delete any male phone numbers and other phone numbers he didn’t approve of and made me show him. i asked him if he thinks this is being possessive and he said no. he said that i’m all he needs and i asked if i could talk to some girls online (here) to talk about some female issues (about him, periods, and anything else) and he got sad because he wants to help with all my issues. i kept telling him that there’s some things that he can’t help with and he got really sad. i tried to explain that i just want to make friends and talk to other people but he wouldn’t listen and completely dismissed how i felt in the situation and kept stating his opinion. since i don’t like to argue or get him upset i just ended the argument. are these signs of possessiveness and if they are can i do anything to help it?