-cesine means ''as if '' conjunction as if your eyes betray the love.

In English It means 'as if/as though' - İngilizce anlamı 'as if/as though' For example you can use this like- Mesela bunu şu şekilde kullanabilirsin. The sun moves as if it's disappearing.- Güneş kaybolurcasına/sanki kaybolacak gibi hareket ediyor. Actually Turkish is not complicated. It includes a lot of details but When you understand essence of the matter, you will solve it:) It was a pleasure to help you. You may need more then this help. I am professional teacher. and I will be very glad to prepare a learning plan for you. If you need this, please visit my teaching profile.

you can't think only "cesine " to use its appendix

edercesine is words but here it must be ihanet edercesine = the root is ( ihanet etmek ) in english meaning is = to Betray.