Both are historical dramas with a heavy love triangle in which the FL spends more time with the SML than the ML. Both involve one of the leads developing amnesia for a while, one of the leads thinking the other died, and end with the FL returning to the ML and the two and their child living happily ever after. Both stand a good chance of giving you SLS.
Both FLs are strong fighters and bright, cheerful personalities. They marry the ML in the first episode and begin to fall in love only for something to happen. The couple breaks apart and the FL then spends a lot of time with the SML before eventually returning to the ML. Both dramas stand a good chance of giving you SLS.