How can I make myself exciting to Him again !?

Just dont bug him with the "whats wrong?" Question 10 times a day; it irritates men when they're trying to figure out things.

Stay cool and keep calm; be nice to him and look happy to see him - making a few nice meals for him also helps - everyone loves a homemade meal done just for them.

Like the other lady said: its a lifelong decision..but if he proposed then he cant walk out of it now..the thinking part comes before proposing. Maybe he's just considering if he can manage the financial part of getting married etc.

You sound like a sweet person and he will be a lucky guy to have you by his side.

Wish you all the best.

I think he's getting cold feet from proposing to you, he is most likely overthinking the relationship and talking himself out of it because it's a huge life decision. Just reassure him he has nothing to worry about, and start doing fun and exciting things. Inside the bedroom too, if your religion permits you to do so. (I don't want to offend)

You aren't the problem here. You aren't the one who needs to change. If you were boring, then he wouldn't have proposed. Something weird is going on with your boyfriend.

I noticed you didn't say anything about sex, you not having sex with him yet?