How should I deal with a very unwanted gift from my boyfriend?

well....he did show it to you to see if you liked it enough. Just be honest with him. Tell him you love the thought of it and that you appreciate the gift but....a bean bag chair isn't really worth the wait to you. Maybe you could suggest you two snuggle up somewhere else..:) Just tell him the reasons you just posted, its too big, you already have one... maybe tell him you would much prefer a nice romantic evening together.