What keeps me living is knowing that I will be with you again at the end of the day
This quote applies if you expect to pick up your lover after work before going home or going out on a date. This also applies to couples who have been cohabiting for some time. Living together meant having time apart due to work. You end up buying enough time to gather smooth things to say to your lover due to that brief absence from one another. It may have been one of the most versatile quotes out there for you to use.