In our relationships we do jobs everday. It may be something as simple as making sure your children have lunch everyday, or as important as making sure the bills get paid on time. Those jobs often go without a thank you. Today, that will change. Find 3 jobs, or things that your partner may feel is mostly thankless and acknowledge them for it.
Either way, showing appreciation for those thankless things he/she does today, will warm their heart in every way.