I'm puzzled up, can you help me?

I'm writing this because i'm trying to figure out what i am, and maybe someone of you can help me. Let's start with the basics, I'm 21, a male and i'm of the bearish type (chubby, quite hairy and with goatee). Now i'm not very lucky with the ladies, in all those years i've been rejected by almost all the girls that i liked except by one was a bit psycho and decided that was more fun playing tricks on me. I got engaged once with a girls that i didn't liked but i tried to understand how it was being engaged, for the first two weeks all was good, partly because it was a new experience also. When we kissed i had erections (it will be relevant at the end of the blog), but i really didn't liked when she tongue kissed me, because she went to deep with the tongue and after a while i felt like i had to puke. Once we where in a park and we were laying on the grass i tickled her armpit and trashing around she accidentaly touched my groin, she noticed that i had an erection so she got scared and told me that her back was aching and that she just wanted to lay there on the grass. A couple of weeks after this episode we took separate ways, from then i had a crush for a couple of girls that were obviously not interested in me. Before the story continues there's a thing i have to say, most of the tickling videos of any gender (f/m, m/f, m/m, f/f) arouse me, so i think that i'm a bisexual but i'm not very sure of it since i'm still virgin. Lately i wanted to have a real tickling experience so i tried to contact a couple of guys (also to understand if i'm a bisexual or not), got no reply, but lately i met a guy and we met twice, we just talked but i feel at ease with him. Unfortunately in this period in Italy you hear many case of violence due to homophobia and this scares me a bit. Anyway he thinks that i'm gay, because we had almost the same past experiences, but i'm not sure if i am gay or bisexual. I'm trying to find an answer but i don't know how, so that's why i'm writing it here. How can i understand what i am?