One word of caution only .....is your boxer baby trained? ie sits/walks happily on a lead/ recall is good etc.? If so then I think the rescue has your name written all over him If not, then I would think twice because rescues will need a lot of settling and/or training ....and you really don't want 2 boxers neither of which will do as they are told!! ......the naughty behaviour is infectious, and they feed off each other.
Two dogs together is just wonderful ....they play and have so much fun!!
lolly is doing very well now we have sorted the chasing cars ...almost completely she sits, she doesn't beg for food, in fact I hate even being looked at when eating so have worked very hard on that she loves everyone but doesn't jump up, another pet hate although she jumps up for a standing cuddle with me on command she is a leetle strong on the lead but I have obedience classes booked for the 16th to help with that and we live in the middle of nowhere and rarely need her to be on a lead she runs alongside me on the bike nicely and her 'becoming a teen' fear aggression barking is getting very much under control now
Sounds like Lolly is grown up enough to enter into this relationship.
I think you'd better print off a picture of him and put it on your fridge with 'Oh but I couldn't' written on it. If after 10 mins a while you still look at that gorgeous boy and want him than it's destiny.