Love / Irish woman dating a Polish man - need advice about my polish boyfriend and marriage [24]

hi i need some advise, i,m a 48year old Irish women whos being dating a 51 year old polish man for the last 4 months, he tells me he's in love with me, I am deeply in love with him, he says he has exgirlfriend in poland the mother of his two grown up daughters. he wants us to get engaged at christmas, he's sent to poland for papers to say he's free to marry me, but i tell him he's moving to fast for me, i have 2 grown up children, who he needs to get to know first. I dont want to lose him, but he wont listen when i say , marrage is big commitment in Ireland, he says when polish men fall in love they want to get married quickly. Is this true in poland? I'm very confused, my family think i'm crazy about engagement at christmas