It sounds like you need to be seeing a therapist about processing what you've gone through with the drugged drink. Your husband may genuinely feel he has nothing further to offer you in terms of discussing that incident.

I'm surprised that you want so much to talk to male friends about your issues. Generally speaking, men do want to problem solve, in contrast to women, who are more understanding that, sometimes, a person mainly needs to emote and be empathized with. In my community there is a wonderful warm/hot line that I've used when I've needed someone to talk to. It is staffed by wonderful male and female volunteers. I've been amazed at how consistently men and women differ in the way I described above. Sometimes, when I've mainly needed empathy, rather than problem-solving, I've known to just cut the call short, when a male volunteer answered the phone. Are there ever exceptions? Yes, but they are the exception. I think your life would be enriched, if you started to cultivate female friends. If that doesn't come natural to you, all the more reason to get started on that before you get any older. Working with a female therapist might be a way to start.

If what you feel would best meet your emotional needs is for you to get together one-on-one with a young, unmarried, male friend to confide your most pressing emotional issues, then I am 100% supportive of your husband objecting to that. It is not an approriate bond for a married woman to be developing. A man would have to be a fool to not find that threatening.

This comes up quite a bit in threads on this forum - the issue of a spouse not being okay with a partner keeping a close confiding relationship with a single, young, opposite-gender friend. I think not being okay with that is a perfectly natural reaction. This is not to say that you have to wear a burka and never make eye contact with a male who is not a close relative. But there is a level of familiarity that a married woman cannot expect to have with single males and have her husband be just fine with that. (Same goes for married men needing to accept limits on how cozy they can get with single, female friends.)

If the man in my life were to tell me that he was meeting a female friend for coffee, so he could get some emotional support, I would tell him not to expect to find me home when he returned. Confiding in someone about your experience of emotional trauma is apt to lead to intensifying intimacy. Generally speaking - and there can be exceptions - this kind of sharing is asking for trouble.

Maybe what you are wanting to do is different from what I am envisioning. Please correct my misperception, if I'm not understanding you correctly. You have every right to cultivate friends, but being married does put some constraints on that, which you are wise and to respect.