♠K J 9 8 6 ♥A 8 7 3 ♦10 5 2 ♣8 Playing Matchpoints, Standard American bidding, my partner opened 1D and with the hand above, I bid 1S. Partner responded 2D (we agree this shows 6 cards). At this point, my partner might have 4 hearts, might have 3 spades. If I bid 2H now, we would find our heart or spade fit. If pard has neither, I can correct 2NT to 3D, or pass 3D if that is his choice. However, I considered that bidding 2H now, a new suit, would be forcing and therefore would be telling partner I have more strength than this, and might propel him to a poor 3 level or even game contract if his minimum 2D response was nevertheless decent. I elected to pass, as we had found a nice fit and I was not interested in inviting game opposite a hand only good enough to rebid 2D. Partner felt I should have looked for the major fit, and tells me he would not expect extra strength from me. So, in general terms, would 2H by me have promised extras, or can it be construed as attempting to improve the strain and not showing anything more than a minimum? And with my hand in question, would 2H be a good rebid? And now that I think of it, would a rebid of 3H be game-forcing in this auction?