No one can hide forever his true interests and when you want to know the person is who you think it is, it's better to make sure. This could save you from a lot pain, disillusion and even can save your life. If you have problems, I can help you so you don't get hurt or live with the constant worry "Does she/him has anyone else?". I found out that knowing someone mailbox can give you his true image and never get hurt again.

When you are blinded it's hard to see that she/him doesn't really care about you and pleases you only for material advantages (gifts, restaurants), someone to be with or worse to make a foul out of you.

Be careful what you want from a person because later you will get to hate the things you liked about her/him at the beginning.

Always reconsider before dumping someone and remember that no one has the right to make someone suffer for his pleasure or rather insanity.
Think very very well before you can take such a step because you will never get the chance to step again exactly in the same place as nothing has happen. It's in out human nature to excuse but never to forget.

Advice: Don't get too hasty to dump someone on his so called mistake.
Remember that you can see your true image only in the eyes of others.