Love / polish boyfriend has wrecked my english [48]

okay, so my boyfriend is polish and has been living in england for two years. He arrived only knowing how to say hello but after one year he could already speak fluent english. The only problem is the sentence structures. i go to the shops becomes i be go to the shop... and with all the time i nspend with him i've picked up this. I find this very weird considering i have spoke english all my life.. Is this normal or am i just a freak?