Search Results: not returning phone calls

I got really frustrated today, because of this. I make a lot of phone calls in my job, and it's incredibly annoying when someone answers a call from an unknown number, and just says 'Hello?', especially when it's a phone that more than one person uses, and even more so when you've missed their call and you're returning it.
When I answer a call from someone I don't know, I always pick up and say 'Hello, (my name) speaking.'
Does anyone else get really annoyed at this?

Here's the back story:
He heard me one day in the hallway tell my friend “Git it shawty, git it” when she & her boyfriend were kissing. He'd greet me by saying that. He’s a Religion teacher
When I had to give him my transcripts for class recommendations he told me I smelled nice
He wanted me to join chior, the club he is in charge of. He made me audition & was willing to make special arrangements for me & only me. He wanted to buy me a $2,000 instrument.
I helped him set up his classroom. After, he came searching for me and asked for more help, prolonging it. He even wanted me to stay at school on a teacher work day to help & said he would take me to lunch, in his car, and pay for me. After I helped him for two weeks, he told my mom that he was going to gift me. My mom said, “No, give her service hours.” and he said “I will, but that doesn’t count.” my mom asked him why not. He said “Because I said so.” Two weeks after he called me up to him & told me to look into my bag. I opened my bag he put a $50 gift card in it & he smiled at me. He told me to walk away before I said anything.
I finished his sentence & he said, “You did that thing! You finish my sentences! You’re so good at that! Mental connection, huh?”
I told him on Monday that I like his taste in bowties. On Tuesday he ends up wearing one instead of a tie.
He sent me to his car once to get something for him. When I returned he said "you are the woman!"
He sang "Treasure" as he stood next to me, looking at my work.
He helped me with hw that wasn't even for his class via text. We text & he's called me on the phone too.
He has hugged me like 9 times.
People have repeatedly told me that he likes me.
There's a lot of other occurences i just can't fit them here lol

He left my school two years ago. I graduted a few months ago.
I saw him again a week ago after a year and a half of not seeing him. He kissed me on the cheek, and not like the typical air gretting kiss people get. What does all of this mean?