Should my wife and I seek any kind of counseling if she is convinced our marriage is over and has turned romantic love into platonic love?

Over the course of a few days, my wife was unsure about her feelings for me due to constant intimacy issues. After she thought things through, she came to the realization that she is no longer "in love" or attracted romantically to me. She instead has more of a platonic love and just cares for me as just "family." At that point, she said our marriage was over. Now over the course of the last few days, she has taken a "friendship" from a coworker. She insists there is nothing more than friends, but she has spent all her free time with him.