Search Results: shy when alone

We met over the summer and he later befriended my brother also. He is 13 months younger than me but I am a little immature (unless I need to be otherwise) and get along with younger people maybe cuz that's what I have been around. But I have choir and study hall with him and he will look at me and I will sense it and look back and he most of the time (when I dont look away blushing like crazy) smiles at me. He is sometimes shy mostly when there is a lot of people I recently noticed because he was looking at me after the teacher said partner up for a assignment and he was upset cuz he couldnt go to the school movie later that day and when I sat by him he seemed happier especially when I gave him something from the movie after school. I have noticed depending on who he is around (we hang with different groups) like when he is alone with me or around people he doesn't care about (which the second one is rare) he will be more flirty and tease me and act cute. But when he is around his cousin (which he tries to impress and sadly looks up to even tho they r the same age) his mom and dad like me (I'm friends with his sissters and younger brother which one of the sisster and his younger brother admitted to likeing me and I'm am straight so I said no to the girl and I dont like kids more than 1 MAYBE 2years younger) during summer when we would go out and play basketball with my brother and him he would try to impress me and while we would go outside and hangout he would , everyone said, that he would mouth that he likes me. But he also said he liked this girl at a different school who (how he described) was total opposite of me but then he after talking about her and me getting (so stupidly obviously but not in a bad way) jealous he liked my reaction and after ward he said she said no to him. He will also start saying certain words how I say them (like how i say fity instead of fifty) or how j call everything "dope". Also he will get mad at me when I say something "mean".

What do you think of girls who are extreme loners and go to events alone and do other activities alone? I'm talking about the loners that are not shy at all and are actually very social. They're are the type of loners that makes friends easily but always choose not have close friends and rather just have acquaintances that she never have to stay in contact with. These types of girls are very comfortable exploring places and new things by themselves. So, would you still consider "social" loners a red flag? Why or why not? Ladies feel free to answer as well if your a loner yourself.