Do they still smoke? I've seen that before, if they are still smoking it's harder for them to congratulate you.
45 days is quite an accomplishment. You are over the hardest part, but that doesn't mean it's easy now. Been there done that. My wife and I quit at the same time. After 60 days she caved and started up again. Somehow I maintained and have not smoked much since (25 years ago). DW was able to quit but she was a few years behind me.
I know it's not easy, each day and situation can be a new challenge. Stay focused and remember you are doing it for you. You'll feel so much better and food will taste better....plus you won't have to go out in the cold to smoke this winter.