My boyfriend let me a love bite

Hi guys, Well, this gonna be quite large.. On Saturday, to be exact, at night, I was walking with my boyfriend (Albert). He was a bit drunk, but everything was okay. My sister sent me a sms asking where I was and I answered I was going for a walk. Albert told me how was his week as he is an educational advisor. Some minutes before I got home he gave me a love bite, it was very soft. On Sunday, which was my last day of holidays, I was waiting with my sister-in-law(Claudia) to my brother (John) to go to a club which has a pool. As he was being late, I told Claudia that I wan't going to there. Everything was fine, until he shout out: YOU HAVE A LOVE BITE. My sister (Diana) heard it, but she didn't say something at that moment. As soon as, Claudia told it, I said okay I would go. When I was in my bedroom, Diana came and told me: do you think I'm stupid? I was in silent and then she left me. After that, I was texting with Albert (I told everything). he was sad telling sorry for that. Also, saying that it wasn't going to happen again. I added that everything was fine that I was going to manage the situation if it got worst. However, he still was sad. When I was taking the trip to the pool, he didn't say me anything. Then, in the pool, i took me a photo and sent it to him. He saw it and thought: " it looks like a sting" with a sad emoji. He was quiet and when i was going back I sent him another photo. He told me: "I got it. I already think that I'm not feeling well about that". Before going to bed, I wrote a huge text about the love bite and turned my modem off. Yesterday I saw what he answered telling me off about why I did that(the modem) instead of answered me about the love bite. Yesterday, he was taciturn. Told me he almost hurt a friend, but this one was wiser than Albert and solved the situation. Today, was the same until I asked him if he was available to go for a walk. I waited to the answer because my classes were until 12pm. I got a message and told me what do you want to do? I told him: talk. Then he advised going for dinner or to the cinema. Then I suggest some places, but we decided to to Starbucks. I arrived to there early and said him I would wait for you. Then he called me saying there wasn't any empty taxi. So he asked me if I wait or see each other during this week. I replied tomorrow, but he said: I think I have a meeting with my work's partners. It depends on if it happen or not". I said ok. Take care. No problem. If not, we can see us on sarurday. This happened 6:30pm He sent me a message 20 minutes ago telling me he already arrived his home. Now I'm just thinking. i don't know what to do. Sometimes, this situation makes me feel very sad. When I start to tell him something, sometimes he interrupts me and then I got quiet. Or answered the last text. He is 27. Im 20. It's my first boyfriend. The one which I had my first kiss in all my life. Sex stuff... I began a new semester at college yesterday and I dont want this situation makes me feel deppresed. Sometimes, I cry in silence, alone. Im in the closet. Nobody knows it. Just some two cyber friends. My sister has a suspicion about me because I didn't use to go for a walk. Now I do. She also knows about him just his facebook because one day I post i was at the cinema with him. I know albert since July of last year. We are a couple since October. Tomorrow, we are going to have 5 months of being a couple. He tends to forget the date. He said: I dont have a good memory. Maybe tomorrow tell it or I dont know. I dont know what to do. Now I dont wanna do anything. I suposse to be studying but I dont have the strenght. What should I do about the situation? Am I a bad boyfriend? Am I getting bored to him? Sorry for writting a lot and if I made some mistakes. English is not my first language...