“Honey, you are a distraction and keeping me from developing a close relationship with God. So, I need you to stay at arms’ length from me during Lent.” That is a great conversation to have shortly after Valentine’s Day. After all, everyone wants to hear that their presence is detrimental to the health of their partner’s eternal soul.
You likely did not mean to imply anything of that sort, but that is what your partner might hear if you announce that for Lent you are giving up all physical intimacy. It is your choice, obviously, but your partner might well be confused and hurt. Also, where is the line? Does this mean that you two are simply going to stop having sex for a month or does physical intimacy also include a kiss goodnight?
In addition to potentially causing problems in your relationship, completely abandoning physical intimacy for Lent might simply be a case of you shooting yourself in the foot. Bouts of celibacy work well for some people. For others, it simply makes them more obsessed with the object of their affections. For them, lacking an outlet simply makes them more lustful, sort of like trying not to think about pink elephants. Unless you know which category you fall into, pushing your partner away for Lent is probably not a good idea.