I'm new to this community, so I'm not sure if I speak with as much experience and knowledge as everyone else here. That said...
You two live together? Perhaps he is in a MLC... but I'm not sure that not answering his texts the next day would cause anything productive to happen. There's a book I read, called How to Get Your Lover Back by Blaise Harris that really talked about how to love your spouse or partner 100%, even through these tough times.
Also, I wonder, what hobbies do you have? What do you do that you enjoy, outside of your relationship with your husband? If he's reaching out to other people, learning French, etc., what are you doing? Sometimes, if you develop your hobbies and your life more, outside of the relationship, the spouse will become interested and even intrigued. You, also, will care less about what they're doing, because you'll be filling your life with more things that you love.
There's this great blog... and now I can't remember the name... where the writer chronicles how she got her husband back, after he left. Part of how she did it was by cultivating her life. She chose to be "guided by love," she said. As in, she made a list of all of the things that she loved to do before they met, then all of the things that she'd always wanted to do. Then, slowly, she started to intentionally go down the list and do them again, or for the first time. If she loved it, then she continued it. If she didn't, then she stopped. She took this philosophy to heart and applied it to the rest of her life, as well. Soon, she got back into yoga (which is now a daily practice for her), etc. etc. Her husband was like, "who is this person?" It was actually a huge help in getting him back. Weird, huh? Getting him back by developing yourself. I'm still learning this, as it seems like other than school, I have very little of myself going on. I made some earrings last week, and that was huge. Just wearing them felt so good. I need to do more of that myself.
So anyways, there are my two cents. Hope they help, and good luck. xo