Can i really feel lonely?

There are many instances when i've found myself puzzled by my own feelings of attachment. Maybe it's because of my attachment style or maybe it's because of something else, all in all, i have a puzzled idea on whether i feel "lonely" at all.

Sometimes, no, alot of times i like to do things by myself. I mostly eat by myself, i practice on games for hours on end by myself, i like reading, i like to think through things by myself...it's like everything that i do, i do it by myself - lol. But, although others might think that i'm someone who isolates myself, most of the time i would prefer if i was around friends and people that were close to me - those who i can connect with. Although there are times where i would like to be alone, but those times come rarely nowadays. I wouldn't mind going around with friends and having chats. Compared to years back, i'm totally a "solitarian" (i don't know if there is such a word, haha) who seriously wants people to mostly leave me alone and i'll just go along my own "world" or something like that. But now i've changed my perspective to merely liking to do things by myself and still having the willingness to have company around me.

But, i know people get lonely at times or periods that they haven't hung out with their friends in a long time, or they're just alone all the time, basically when they're in the lifestyle that i have. But the difference, or problem (don't know if it is one), is that i don't feel any discomfort when i'm left alone. I know there are friends that spot me going around by myself without anyone else, and they often ask why i'm always by myself, while others would find a bunch of friends to hang out with and always do stuff together. I know myself as kind of a..."last resort" friend for most people, but i don't mind being that way. Friends come up to me and there are some rants that concern about feeling like they've been left out around people; or when everyone starts getting real busy and no time to hang out, they start to find themselves in a gloomy mood coz they're feeling a little lonely without anyone to hang out with. Most of the time, i have no such feelings 0_o

Those that are closer to me might know that i have another side to me that's extremely childlike. Well this is the side of me that does have the capacity to feel lonely - sometimes. But most of the time, this side of me is overruled and i'm back to looking out for other people. I do have urges to go and call people to hang out, but i seldom feel pangs of sadness due to being by myself alot. Is it weird? It's definitely puzzling to me. All these years i've noticed myself having this lack of the ability to feel this emotion. The funny thing is, i can tell that another person is feeling lonely, while i seem to not have the capacity to feel this way. Is there something that's wrong with me? o_0

Perhaps it's another matter. Or is it? Even when i'm attached, i am mostly feeling the yearning to be by that person's side and just to be there. But, do i feel lonely? I know i can miss people, but lonely? I don't know. Is that a problem? It might be a problem because it can make matters complicated.

Hmm...wonder wonder wonder......o_0