So the visible text on the back is:
01001101 01100101 01100101
01110100 00100000 01101101
01100101 00100000 01101001
01101110 00100000 01101101
01111001 00100000 01110010
01101111 01101111 ?1101101
00100000 011101?? ??101111
01101110 011????? ???00111
011010?? ????????
Presumably it's actually:
01001101 01100101 01100101
01110100 00100000 01101101
01100101 00100000 01101001
01101110 00100000 01101101
01111001 00100000 01110010
01101111 01101111 01101101
00100000 01110100 01101111
01101110 01101001 01100111
01101000 01110100
"Meet me in my room tonight"