What could this mean?!!!

Okay so I’m so stressed out and confused right now. I’ve been dating my boyfriend for 2 and a half years and we live together. He’s in the army is getting deployed to Africa in August for a whole year.

Well last night he told me he wants to talk to me about something.

He said he wants to take me to the beach Friday night for a romantic walk and he said he will tell me it there. He said it’s nothing bad and I don’t need to stress out. He said it’s good and he thinks I’ll be happy.

He said his sister helped him planed it out.

What could he be wanting to tell me? I’m so stressed