她发现男友是个脚踏两条船的人，因为他周末总是找借口不见面。

She realized her boyfriend was a ___two-timer when he kept making excuses to avoid meeting on weekends.

她发现她的男友脚踏两条船，同时和两个女孩交往。

She found out her boyfriend was a ___two-timer, dating two girls at the same time.