You need him to come here and read what these great people on this board say about what swing is. Cause from all of what I read here its about respecting each other and if one says I don't want to then its no go.
As for anything else no one can tell you whats the right thing to do. You can get some great advice if you read some of the post here.
Do you love him? Or do you just want someone to be with? I know its hard not being apart of a couple but if you are being the other half for the wrong reasons then no matter what you will not find happiness.
If you do love him and he loves you then a good long talk is really what you guys need. You should not have to do something you don't want to just to please him. Sorry if I rambled a bit there I just do not belive anyone should do it just cause someone else wants them to. soapbox