Releasing the Alpha Dragon by Emma Knox

When this sleeping dragon awakens, so does an old enemy…
When Jonathan stumbles upon a statue in the forest, an inexplicable draw makes him lay his hand against the cool marble, inadvertently waking the last of the sleeping dragon brothers. The power of his instant attraction to Lad is only matched by his confusion and disbelief when Lad tells him the truth. He can’t wrap his head around the prophecy or his feelings for Jonathan.
The instant he’s awoken from his stasis, Lad knows he’s met his fated mate. But when Jonathan rejects him after a night of indescribable passion, he wallows until he reunites with his brothers who have been living their lives and continuing the fight against the vanguard. The threat against the dragon shifts hasn’t abated after all these years, and when Jonathan returns and announces he’s pregnant with Lad’s child, everything changes.
The only thing stronger than the desire the brother share to end the war with the vanguard is the love Lad and Jonathan have for each other…