Nell youre mind reading hun! He's ET remember he dont make sense.. Your email sounds fine, if you want to make it sound a bit less stand offish how about "Can make Saturday after three or Sunday" That sounds a bit more like you are trying to comply a bit. Dunno if thats giving him too much or not!
Suit sounds nice, Im in the same position as you Im in between sizes on some things although Im only 5ft1 I can do petite bottom half but not petite top half, even though normal sizes the arms are always too long..
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Once lost but now found and happily married again!