How do you know if your girlfriend/boyfriend genuinely loves you? It's hard to tell isn't it?

You may think that your girlfriend/boyfriend loves you so much just because he/she always spend time with you, show their affectionate towards you, whisper sweet nothings to you or even buy you gifts. What's the point when you get all those but actually your girlfriend/boyfriend is cheating on you behind your back?

Some people are able to tolerate with that just because they've been given all the attention they needed. But is that worth it? Why waste your time with someone who doesn't love you wholeheartedly?

Sometimes I don't understand why people are so cruel as to cheat on their girlfriend/boyfriend. You wanted to be a relationship with that person and even make promises to him/her to be faithful and loyal. But in the end what happened? Eyeing on others.

I think it's better to tell your partner the truth that you just don't want to continue the relationship anymore instead of making him/her look like a fool. Such things just frustrates me. People just don't treasure what they have. And when they realised their mistakes, they would come back crawling to their partners. Well I think that would be too late. Personally I feel it's still ok if these people repent but what if they repeat it again? Then I guess they deserved to be shot dead =)