I recently found questionable websites my husband has visited: mobile sex dating, an escort site and a women seeking men site. I don't mind him looking at porn sites, but these searches send off an alarm in me. He has been distant for months now and is always consumed on his phone or computer. When should I ask him about this or should I let it go for now to collect more information?

If I were to ask that question myself, how would you answer me.

Interractive sites that promote contact between consenting adults, is not a sign of fidelity within a marriage.

That he is distant, and you have not already addressed this, is a cause for concern. Why haven't you already brought this up? What are you waiting for?

What you have seen so far, is only the tip of the iceberg. You realize that he is a participant, right?

If I were to ask that question myself, how would you answer me.

Interractive sites that promote contact between consenting adults, is not a sign of fidelity within a marriage.

That he is distant, and you have not already addressed this, is a cause for concern. Why haven't you already brought this up? What are you waiting for?

What you have seen so far, is only the tip of the iceberg. You realize that he is a participant, right?

-Thanks Jake, I have asked him about him being so distant. He always says he's under a lot of stress at work. I surely don't want to cause stress on our marriage by being an accuser.

Dating sites and escorts sites are used to meet real people for sex.

If this was merely ( and I don't like them) sites for online interaction, watching real people do things as you chat with them, it is different.

So it sounds to me he is looking for hookers or people to date maybe for meet ups for sex.

You need to have a conversation with him. This looks like cheating.
As a side note, you don't know what (STD) he may bring home to you.
You need to know what he is doing.