Desperate mature short plump married wives

this may seem weird but ever since i had a friend in secondary school...
he used to live alone with his mum and for some odd reason before this (i was about 14-15 at the time!) the thought of a mature woman would make me cringe!

but after staying over his every so often i just have this 'thing' for licking out mature ladies now... she wasnt that bad looking but nit it seems that my dick only really responds to the typical plastic tart and the short mature married plump housewife and i really dont know why

is this normal?