Relationship vs weed?!

Cynthia

Me and my boyfriend have been dating over a year now and when we first met he told me he used to smoke and I wasn’t really a fan but it was not a problem bc he didn’t really do it anymore. Well the other day I saw a message asking about where he could get weed from and asked him about it. Long story short he has been smoking and idk I feel different now because he kinda lied the whole time. Any who do you think someone lying about smoking weed is something to really be worried about or am I over reaction?