Valentines Day surprise ideas for my Boyfriend?

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I'm looking to find some fun an unique ideas to celebrate Valentine's Day with my love. He has always gone above and beyond for me and I'm looking to do the same this year. I will be 7 months pregnant by that time, and due to the new baby, won't be able to afford some fancy hotel or beach stay. I'm looking for ideas from the heart. He is a hopeless romantic type. So ladies, will you please help me figure out a great way/idea to celebrate Valentine's Day? I need all the help I can get! Lol Thanks in Advance. I'm only asking so early due to having to plan and buy stuff without him knowing.