Before I begin, I would like to tell you that since this myTake is from a guy's perspective, some signs shown by girls may be interpreted wrongly, so please correct me where I am wrong.
Secondly, since this is my personal experience, things in your life may vary but still, here it goes.
How to know if you are handsome
1. Behaviour of the girls
The most common sign is that you see girls and ladies staring at you. It may happen if you look shabby (if you look shabby, then you know) or there was something wrong with you that day like you had a stain on your clothes or your hair were messed up. If the looks continue, then you know what they're for.
Here you'll see two types of girls:
1. The ones who'll quickly look away when caught staring: these girls don't want to show their interest in you or don't want to make it obvious that they find you attractive. So they'll just quickly look away when you catch them staring at you.
2. Girls who won't back off: some girls won't look away but hold the gaze and keep on eye balling you even after getting caught. The reason is simple, they want you to know that they're interested in you.
2. See for yourself
When you see yourself in a mirror, you'll easily come to know if you're handsome or not. I mean really, we can easily judge people on how they look so it won't be problematic to figure out how you look.
3. Keep your ears open for compliments
You may hear compliments on how attractive you look from your friends and acquaintances. Now, I won't say that girls don't complement handsome guys in how attractive they are, indeed they would sometimes. Probably because you're already friends with them or they know you in one way or the other.
In my case, girls never complemented me, they never even talked to me. I am yet to find out that reason. If you know please let me know. But they commented on my looks while in a group. They used to call me 'sexy', ' hottie' and what not.
4. Do you smell something burning?
Watch out for other guys' behaviour towards you. They may go to such an extent that you can conclude that they are implying very indirectly that you aren't good looking or that you're very arrogant because of your looks even when you're not that good looking or say that 'okay, you're good looking, so what the big deal?'. You can also observe them getting cocky around you, mimicking your way of walking/talking or even copy your hairstyle but won't admit. Some guys will unnecessarily get competitive around you and will constantly try to prove themselves superior or better than you.
My advice, let the children play. People do very well know you so don't get down to their level and react something childish. Once they know that the joke is on them, they'll stop eventually.
Some people will call you 'girlfriend-snatcher'. Their girl may become interested in you and leave them for such reason. And now, you have one more enemy to your never-ending list. Keeps on happening to me all the time, first, I was like 'Wtf!? Really?' and now I am like 'ah, okay'. I had to skill up my combat skills and chisel up my body structure and physique so that if one maniac comes to blows for such a petty reason, I may show him something. Now I have a nice body too, 'look at him, as if his face was not enough to impress the girls, now he has got abs too, what a show-off. Jerk' and thanks a lot.
5. 'You're gay'
Seriously people? Gay? Simply wow.
Whenever you get a shave or a new haircut, congrats, you look like a gay to 'them'. That's one of the sign of insecurity of jealous guys of course. I admit, I once reacted to it saying one of them to look at his fat chest and my 5.5 inch long organ and then call me gay, rude I know, sorry, but no sorry.
Seriously, other guys are jealous of handsome guys' looks, reason being simple, they want women too, but the women preferably choose good looking guys, especially in their teenage. And that's also a high time for other guys to feel the urge to get a girl and not getting the girl makes you their target. If you are buffed and intimidating, expect them to comment on your looks and then hiding their face.
You have two options now,
Option 1, ignore them, they'll stop they get tired.
Option 2, confront them and shut em up for good, it's your call.
6. You get high attention of the teachers and almost everyone knows you
You'll see that almost everyone knows you and your name. Although, some people may not admit it, insecurity again, but still they do know you.
Thank you for reading it.