What am I supposed to do? I think my dad cheated on my mum. He accidentally text me some message saying "Dear I reach home ready, text me when you reach there. I love u dear" but my mum is home with him. omg.... I feel so lousy.

Oh dear. Big hugs to you. I will try to monitor for a while my dad's behaviour then confront him. Reason being men won't admit until evidence is dished out and you can't be sure what is going on now. And you need to tell your dad to make a decision if he really has an affair, leave the woman or leave your mom..although I hope the latter won't happen. After what moms suffer and go through to bring up a family I will be very angry with my dad for doing this to my mom. I dunno what to say and advise. But I hope things work out for you all