Marriage

I have been together with my boyfriend for going on 4 years. In those 4 years he tells me he wants to marry me. Today I found a friend got engaged and called to tell him the news. His reaction was " cool. I don't care. I'm in no hurry." After multiple friends getting engaged and married I get a little bitter but after that comment I just don't know what to do. Is the time really coming or am I getting lead on..