Stupid tears.

Today I cried agn..
Stupid tears jus came dropping out without my control..
Not because I was sad or happy..bt cos little betrayal feelings..
I cant believe my bro actually feel so happy to let me make a fool of myself in front of all my classmates fr the past 2 weeks in uni.
I mean he can joke n bluff me bt he rly went overboard this time.
I ask him on my first day of uni whether I need tap in n out of class fr my attendance n he say need.
So I went ahead with no doubt as I had nv tap fr my own attendance in poly before.
then after I see so many ppl was looking at me weirdly after I tap out..I went home n ask him.
and he say ya need tap out if not how ppl noe whether u leave early or wat ltr.
then I rly trusted him n contd doin so even though my friend say dun need n nv folo me..
and I even went ard telling my classmates need tap out my bro say de..
Then 2 weeks pass..and I found out he was actually lying to me..
If he rly didn't know dun nid tap out..I will not be angry n feel so frustrated like now.
But when I confronted him..he jus pointed at me n laughed and say bluff u de wat..u rly believe n go tap out ar?
At the moment I rly dun feel this is all funny.
I jus felt rly frustrated n betrayed. like how could he do tat n feel that everything is funny n I will feel ok wif it?
But at the same time..I am angry at myself why did I trust him in the first place even.
Thought he will normally joked n bluff me bt when come to this type of serious things he wun.
I even felt so stupid that why I cant seem to control my eyes not to open it's tap once agn so easily.
Is it jus a trivial matter to you guys out ther if it is you?
Am I thinking too much n taking things too srsly?
Am I being too emotional?
I cant believe I can be so easily hurt by people...