Funny acting

Tell me if I'm over reacting so my bf had been acting real suspicious with his phone I haven't seen any calls or texts from anyone 🤷but so come to find out he had been buying weed from this female that stays with his homeboy he only bought weed from her twice but I was never present and lied and said he never seen her or met her I asked why he lied and said because I over react then tried to spin it on me, bit he's been acting different towards me since she came in the picture,she told me he never came at her in any way but it looks like it something up between them