Out of the woods, now to get back in the swing

I posted here a long time ago, over a year ago about something I was going through with my wife... summarize.. she resented me for alot of things I did that made her feel like she was in my shadow, and she felt unappreciated because those things took precedence over her. I was blind to it, and let it continue for too long, and she became tired and began to not care, and stopped trying to garner my attention. This lead to her going through a part of her life where she was confused. She started going to the bars, where she met guys. One of which she started an emotional relationship with, that eventually became "sort" of physical (they kissed). My wife has always been super honest, and very honorable so for her to even get that far meant things were bad. She finally told me, and we began to try to mend our marriage. Fast forward a year, and we are still working on it, but its getting better little by little. She's in nursing school which eats up all her time, and we just came back from a family trip to universal Orlando where we had a blast, and I got laid... We talk more, and she relies on me more. There's only one thing left to regain.. and that's affection in our marriage. We still don't kiss, say we love each other, hug, or cuddle or anything. She blames it on being together for 13 years, and being busy with school. She says she doesn't have time. IMO there's always time. We haven't had sex since the trip back in Feb. so its been a month since I last had sex, and it was longer than that before. And, we don't do anything special.. its just straight up right to the point. Anyway, I feel like I am getting closer to her, but I need to figure out how to approach this to increase our affection and sex life. She's still attractive to me at 30, and I'm 31. I just started eating healthy and working out a month ago in an effort to improve my appearance. How do I get the affection back? Even stuff as small as a peck on the lips before work, or a hug, or cuddling on the couch for a movie? I'm afraid to try things because I don't know how she will react, its been so long I don't know how anymore. Our relationship is 1000 times better than it was this time last year.. but we still need more work. Any advice? We rarely fight, we talk a good bit, and I help her with school.. I don't get it.

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