Is this bad for her? Would it cause cancer/ other problems?

Question

My gf since I first started going with her was only around 34A at first but think because I rubbed/ suck on them so much (about a total of 30 minutes a day) that they grew much larger to 34D (all within a little less than two years seems to be growing still). They become firmer but every now and then she'll beg me to stop because she says it hurts? Just like to know if i'm causing much harm to her or that it would lead to problems later on. thanks

Answer 1

Be gentle, b***s are delicate, especially at the time of her period they can become very tender so maybe leave them alone then..  You have not done anything to change their size, she is naturally gifted there!

Answer 2

Man I would be asking you to stop after thirty minutes as well...that's almost like Chinese torture.  Be gentle and sensitive to her needs.