Kept a secret.. don’t know how to feel about it...

Sounds dumb to some I’m sure- but I am personally very against drugs other than weed. I just found out tonight that 3-4 years ago my husband tried shrooms on his bachelor night.. NOW, before you jump to conclusions - I’m not mad he tried it, that’s human nature to be curious. BUT what I am mad at is that he kept it a secret for so long and when my friend was talking to me about it - I like an idiot- had no idea this happened and was pretty taken off guard and I was convinced that she had her information incorrect. When I talked to him about it I could tell something was up and he finally spilled the beans. I’m not even really mad he tried it- I’m mad he kept it a secret, sorta feel betrayed. I don’t really know if I’m being irrational (just had a baby so hormones are still a bit wack) or if my feelings about this are valid. Thoughts? Anyone?