I probably don't need to remind you that today is the one of the most polarizing holidays of the year. Here's a wild statistic that I just learned: Americans are planning to spend $25.9 billion this year on Valentine's Day.

No matter your opinion on Valentine's Day – Hallmark holiday? Great excuse for a date night? Good time to stalk your ex on Instagram? (No judgment! But let's talk about that next session…) - it's hard to avoid thinking about romantic love when the 14th of February rolls around. Below is a round-up of five of my favorite books on love and relationships.