Why not be creative and write a secret message in your partner's umbrella the next time he opens it up to protect himself from the next April showers. You can be as dirty as you want with your secret message but let's not out him to strangers on the street by writing "Can't wait for you to suck my dick". Let's be more unisex with your secret love message.

Even better, when out in public with him pretend that you feel rain coming on and then open it up, you both get under it, super close to each other, lower the message to his view and twist the umbrella as he reads it out loud. Propose to him, ask him to move in, ask for your first kiss in public, ask him to bottom, ask him whatever you'd like.