Oooo I managed to rip my phone into 2 pieces yesterday (was pretty funny at the time) so im also at a loss for certain numbers lol! But hey, you never know you might meet said person again, and there will probably be many more people who's number you will manage to keep who you also really like! Just be positive. Ok, I have a phone thats in 2 pieces, but I just pretend I have 2 phones, only one doesnt have a screen, and one doesnt have any buttons! Its great fun!
On the other hand you may now feel that it is probably best not to take advice from me as my sanity is questionable.