Only half a hit of mdma

Hey guys my friend and i really want to try mdma but our friend could only get us a serve (which is assume is 0.1 or 0.08 or something like that). Should we just take half each and then drink or we have a lsd tab we can share with the mdma but we dont really want to take that as we were saving it for a later date. What do you guys advise on doing? Edit: Its actually 150mg