Wow. Date is a very stressful word. Are you up to it? I would trade a date sitch with you, as you know my W and I are still in limbo.
So, take it slow. Think about the past months when H was away. It was crap, but you also found peace and grew yourself. Cherish this BF of yours, as you know it is someone you love (unlike in most other people dating someone with uncertain outcome). Enjoy his being around, but don't set too much expectations. You know what the best way is to attrack H back. With a lower expectation in mind and a whole new you, you will be pleasantly surprised each day.
Good luck with your date for the weekend. Hope to see some DB'ers from Boston area some time next week.
