I have a moral dilemma?

my wife is moving out of our marital home. we have been married for almost three years. we have a daughter that has just turned one year old. i'm a very sexual person, and my wife has not been for the past two and half years. it hasn't always been this way. the dry spell i mean. we were very connected sexually and had intercourse often. my question is i am having some sexual needs. i am an attractive male in my prime and would like to venture back out into the dating scene. how long is a good time frame. i have many that are interested, but i want to respect the mother of my child. we aren't getting divorced as of yet, but it is more than likely in the future. i'll give it 80% that divorce is imminent. so how long? should i just be discreet? she is the one leaving not because of the sex thing but i feel i'm lacking the person to person connection of sex. we are splitting due to irreconcilable differences whatever that means.(we just don't get along). i need some action, but am only asking what any of you would do.